Bump prometheus dependency to v2.21.0 (influxdata#8795)

* Bump prometheus dependency to v2.21.0

* Make golangci-lint happy

docs/LICENSE_OF_DEPENDENCIES.md

@@ -27,6 +27,7 @@ following works:
 - github.com/apache/thrift [Apache License 2.0](https://github.com/apache/thrift/blob/master/LICENSE)
 - github.com/aristanetworks/glog [Apache License 2.0](https://github.com/aristanetworks/glog/blob/master/LICENSE)
 - github.com/aristanetworks/goarista [Apache License 2.0](https://github.com/aristanetworks/goarista/blob/master/COPYING)
+- github.com/armon/go-metrics [MIT License](https://github.com/armon/go-metrics/blob/master/LICENSE)
 - github.com/aws/aws-sdk-go [Apache License 2.0](https://github.com/aws/aws-sdk-go/blob/master/LICENSE.txt)
 - github.com/aws/aws-sdk-go-v2 [Apache License 2.0](https://github.com/aws/aws-sdk-go-v2/blob/main/LICENSE.txt)
 - github.com/aws/aws-sdk-go-v2/config [Apache License 2.0](https://github.com/aws/aws-sdk-go-v2/blob/main/config/LICENSE.txt)
@@ -62,6 +63,7 @@ following works:
 - github.com/eapache/go-xerial-snappy [MIT License](https://github.com/eapache/go-xerial-snappy/blob/master/LICENSE)
 - github.com/eapache/queue [MIT License](https://github.com/eapache/queue/blob/master/LICENSE)
 - github.com/eclipse/paho.mqtt.golang [Eclipse Public License - v 1.0](https://github.com/eclipse/paho.mqtt.golang/blob/master/LICENSE)
+- github.com/fatih/color [MIT License](https://github.com/fatih/color/blob/master/LICENSE.md)
 - github.com/form3tech-oss/jwt-go [MIT License](https://github.com/form3tech-oss/jwt-go/blob/master/LICENSE)
 - github.com/ghodss/yaml [MIT License](https://github.com/ghodss/yaml/blob/master/LICENSE)
 - github.com/go-logfmt/logfmt [MIT License](https://github.com/go-logfmt/logfmt/blob/master/LICENSE)
@@ -94,10 +96,13 @@ following works:
 - github.com/grpc-ecosystem/grpc-gateway [BSD 3-Clause "New" or "Revised" License](https://github.com/grpc-ecosystem/grpc-gateway/blob/master/LICENSE.txt)
 - github.com/hailocab/go-hostpool [MIT License](https://github.com/hailocab/go-hostpool/blob/master/LICENSE)
 - github.com/harlow/kinesis-consumer [MIT License](https://github.com/harlow/kinesis-consumer/blob/master/MIT-LICENSE)
-- github.com/hashicorp/consul [Mozilla Public License 2.0](https://github.com/hashicorp/consul/blob/master/LICENSE)
+- github.com/hashicorp/consul/api [Mozilla Public License 2.0](https://github.com/hashicorp/consul/blob/master/LICENSE)
 - github.com/hashicorp/go-cleanhttp [Mozilla Public License 2.0](https://github.com/hashicorp/go-cleanhttp/blob/master/LICENSE)
+- github.com/hashicorp/go-hclog [Mozilla Public License 2.0](https://github.com/hashicorp/go-hclog/LICENSE)
+- github.com/hashicorp/go-immutable-radix [Mozilla Public License 2.0](https://github.com/hashicorp/go-immutable-radix/LICENSE)
 - github.com/hashicorp/go-rootcerts [Mozilla Public License 2.0](https://github.com/hashicorp/go-rootcerts/blob/master/LICENSE)
-- github.com/hashicorp/go-uuid [Mozilla Public License 2.0](https://github.com/hashicorp/go-uuid/LICENSE)
+- github.com/hashicorp/go-uuid [Mozilla Public License 2.0](https://github.com/hashicorp/go-uuid/blob/master/LICENSE)
+- github.com/hashicorp/golang-lru [Mozilla Public License 2.0](https://github.com/hashicorp/golang-lru/blob/master/LICENSE)
 - github.com/hashicorp/serf [Mozilla Public License 2.0](https://github.com/hashicorp/serf/blob/master/LICENSE)
 - github.com/influxdata/go-syslog [MIT License](https://github.com/influxdata/go-syslog/blob/develop/LICENSE)
 - github.com/influxdata/tail [MIT License](https://github.com/influxdata/tail/blob/master/LICENSE.txt)
@@ -117,6 +122,7 @@ following works:
 - github.com/konsorten/go-windows-terminal-sequences [MIT License](https://github.com/konsorten/go-windows-terminal-sequences/blob/master/LICENSE)
 - github.com/leodido/ragel-machinery [MIT License](https://github.com/leodido/ragel-machinery/blob/develop/LICENSE)
 - github.com/mailru/easyjson [MIT License](https://github.com/mailru/easyjson/blob/master/LICENSE)
+- github.com/mattn/go-colorable [MIT License](https://github.com/mattn/go-colorable/blob/master/LICENSE)
 - github.com/mattn/go-isatty [MIT License](https://github.com/mattn/go-isatty/blob/master/LICENSE)
 - github.com/matttproud/golang_protobuf_extensions [Apache License 2.0](https://github.com/matttproud/golang_protobuf_extensions/blob/master/LICENSE)
 - github.com/mdlayher/apcupsd [MIT License](https://github.com/mdlayher/apcupsd/blob/master/LICENSE.md)

go.mod

@@ -3,31 +3,29 @@ module github.com/influxdata/telegraf
 go 1.16
 
 require (
-	cloud.google.com/go v0.54.0
+	cloud.google.com/go v0.56.0
 	cloud.google.com/go/bigquery v1.4.0
 	cloud.google.com/go/pubsub v1.2.0
 	code.cloudfoundry.org/clock v1.0.0 // indirect
 	collectd.org v0.5.0
 	github.com/Azure/azure-event-hubs-go/v3 v3.2.0
 	github.com/Azure/azure-storage-queue-go v0.0.0-20181215014128-6ed74e755687
-	github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 // indirect
-	github.com/Azure/go-autorest/autorest v0.11.1
+	github.com/Azure/go-autorest/autorest v0.11.4
 	github.com/Azure/go-autorest/autorest/azure/auth v0.4.2
 	github.com/BurntSushi/toml v0.3.1
 	github.com/Mellanox/rdmamap v0.0.0-20191106181932-7c3c4763a6ee
 	github.com/Microsoft/ApplicationInsights-Go v0.4.2
-	github.com/Microsoft/go-winio v0.4.9 // indirect
 	github.com/Shopify/sarama v1.27.2
+	github.com/StackExchange/wmi v0.0.0-20210224194228-fe8f1750fd46 // indirect
 	github.com/aerospike/aerospike-client-go v1.27.0
-	github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4
-	github.com/aliyun/alibaba-cloud-sdk-go v1.61.785
+	github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d
+	github.com/aliyun/alibaba-cloud-sdk-go v1.61.1004
 	github.com/amir/raidman v0.0.0-20170415203553-1ccc43bfb9c9
-	github.com/antchfx/xmlquery v1.3.3
+	github.com/antchfx/xmlquery v1.3.5
 	github.com/antchfx/xpath v1.1.11
-	github.com/apache/thrift v0.12.0
+	github.com/apache/thrift v0.13.0
 	github.com/aristanetworks/glog v0.0.0-20191112221043-67e8567f59f3 // indirect
 	github.com/aristanetworks/goarista v0.0.0-20190325233358-a123909ec740
-	github.com/armon/go-metrics v0.3.0 // indirect
 	github.com/aws/aws-sdk-go v1.34.34
 	github.com/aws/aws-sdk-go-v2 v1.1.0
 	github.com/aws/aws-sdk-go-v2/config v1.1.0
@@ -39,7 +37,6 @@ require (
 	github.com/bmatcuk/doublestar/v3 v3.0.0
 	github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869
 	github.com/caio/go-tdigest v3.1.0+incompatible
-	github.com/cenkalti/backoff v2.0.0+incompatible // indirect
 	github.com/cisco-ie/nx-telemetry-proto v0.0.0-20190531143454-82441e232cf6
 	github.com/cockroachdb/apd v1.1.0 // indirect
 	github.com/containerd/containerd v1.4.1 // indirect
@@ -49,14 +46,11 @@ require (
 	github.com/denisenkom/go-mssqldb v0.0.0-20190707035753-2be1aa521ff4
 	github.com/dgrijalva/jwt-go/v4 v4.0.0-preview1
 	github.com/dimchansky/utfbom v1.1.0
-	github.com/docker/distribution v2.6.0-rc.1.0.20170726174610-edc3ab29cdff+incompatible // indirect
 	github.com/docker/docker v17.12.0-ce-rc1.0.20200916142827-bd33bbf0497b+incompatible
-	github.com/docker/go-connections v0.3.0 // indirect
-	github.com/docker/go-units v0.3.3 // indirect
 	github.com/docker/libnetwork v0.8.0-dev.2.0.20181012153825-d7b61745d166
 	github.com/eclipse/paho.mqtt.golang v1.3.0
 	github.com/ghodss/yaml v1.0.1-0.20190212211648-25d852aebe32
-	github.com/go-logfmt/logfmt v0.4.0
+	github.com/go-logfmt/logfmt v0.5.0
 	github.com/go-ping/ping v0.0.0-20210201095549-52eed920f98c
 	github.com/go-redis/redis v6.15.9+incompatible
 	github.com/go-sql-driver/mysql v1.5.0
@@ -71,16 +65,13 @@ require (
 	github.com/google/go-cmp v0.5.5
 	github.com/google/go-github/v32 v32.1.0
 	github.com/gopcua/opcua v0.1.13
-	github.com/gorilla/mux v1.6.2
+	github.com/gorilla/mux v1.7.3
 	github.com/gosnmp/gosnmp v1.30.0
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0 // indirect
 	github.com/hailocab/go-hostpool v0.0.0-20160125115350-e80d13ce29ed // indirect
 	github.com/harlow/kinesis-consumer v0.3.1-0.20181230152818-2f58b136fee0
-	github.com/hashicorp/consul v1.2.1
+	github.com/hashicorp/consul/api v1.6.0
 	github.com/hashicorp/go-msgpack v0.5.5 // indirect
-	github.com/hashicorp/go-rootcerts v0.0.0-20160503143440-6bb64b370b90 // indirect
-	github.com/hashicorp/memberlist v0.1.5 // indirect
-	github.com/hashicorp/serf v0.8.1 // indirect
 	github.com/influxdata/go-syslog/v2 v2.0.1
 	github.com/influxdata/tail v1.0.1-0.20200707181643-03a791b270e4
 	github.com/influxdata/toml v0.0.0-20190415235208-270119a8ce65
@@ -92,40 +83,33 @@ require (
 	github.com/kardianos/service v1.0.0
 	github.com/karrick/godirwalk v1.16.1
 	github.com/kballard/go-shellquote v0.0.0-20180428030007-95032a82bc51
-	github.com/kylelemons/godebug v1.1.0 // indirect
 	github.com/lib/pq v1.3.0 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1
 	github.com/mdlayher/apcupsd v0.0.0-20200608131503-2bf01da7bf1b
-	github.com/miekg/dns v1.0.14
-	github.com/mitchellh/go-testing-interface v1.0.0 // indirect
-	github.com/morikuni/aec v1.0.0 // indirect
+	github.com/miekg/dns v1.1.31
 	github.com/multiplay/go-ts3 v1.0.0
 	github.com/naoina/go-stringutil v0.1.0 // indirect
 	github.com/nats-io/nats-server/v2 v2.1.4
 	github.com/nats-io/nats.go v1.10.0
 	github.com/newrelic/newrelic-telemetry-sdk-go v0.5.1
 	github.com/nsqio/go-nsq v1.0.8
 	github.com/openconfig/gnmi v0.0.0-20180912164834-33a1865c3029
-	github.com/opencontainers/go-digest v1.0.0-rc1 // indirect
-	github.com/opencontainers/image-spec v1.0.1 // indirect
-	github.com/opentracing-contrib/go-observer v0.0.0-20170622124052-a52f23424492 // indirect
 	github.com/openzipkin/zipkin-go-opentracing v0.3.4
 	github.com/pkg/errors v0.9.1
-	github.com/prometheus/client_golang v1.5.1
+	github.com/prometheus/client_golang v1.7.1
 	github.com/prometheus/client_model v0.2.0
-	github.com/prometheus/common v0.9.1
-	github.com/prometheus/procfs v0.0.8
-	github.com/prometheus/prometheus v2.5.0+incompatible
+	github.com/prometheus/common v0.13.0
+	github.com/prometheus/procfs v0.1.3
+	github.com/prometheus/prometheus v1.8.2-0.20200911110723-e83ef207b6c2
 	github.com/riemann/riemann-go-client v0.5.0
 	github.com/safchain/ethtool v0.0.0-20200218184317-f459e2d13664
-	github.com/satori/go.uuid v1.2.1-0.20181028125025-b2ce2384e17b // indirect
 	github.com/sensu/sensu-go/api/core/v2 v2.6.0
 	github.com/shirou/gopsutil v3.20.11+incompatible
 	github.com/shopspring/decimal v0.0.0-20200105231215-408a2507e114 // indirect
 	github.com/signalfx/golib/v3 v3.3.0
 	github.com/sirupsen/logrus v1.6.0
 	github.com/soniah/gosnmp v1.25.0
-	github.com/streadway/amqp v0.0.0-20180528204448-e5adc2ada8b8
+	github.com/streadway/amqp v0.0.0-20190827072141-edfb9018d271
 	github.com/stretchr/testify v1.7.0
 	github.com/tbrandon/mbserver v0.0.0-20170611213546-993e1772cc62
 	github.com/tidwall/gjson v1.6.0
@@ -148,8 +132,8 @@ require (
 	golang.org/x/sys v0.0.0-20201119102817-f84b799fce68
 	golang.org/x/text v0.3.4
 	golang.zx2c4.com/wireguard/wgctrl v0.0.0-20200205215550-e35592f146e4
-	google.golang.org/api v0.20.0
-	google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013
+	google.golang.org/api v0.29.0
+	google.golang.org/genproto v0.0.0-20200815001618-f69a88009b70
 	google.golang.org/grpc v1.33.1
 	gopkg.in/djherbis/times.v1 v1.2.0
 	gopkg.in/fatih/pool.v2 v2.0.0 // indirect