(#310) {vrrp_,}track_file: Enforce only String datatype

Example config:

```
track_file acme {
  file     "/var/local/vrrp_track_file"
  weight      1
}
vrrp_instance lb_slm_test_4 {
  interface                 ens192
  state                     MASTER
  virtual_router_id         4
  priority                  50
  advert_int                1
  garp_master_delay         5

  track_script {
    access-lb
  }

  track_file {
    acme weight 1
  }

  virtual_ipaddress {
    127.0.0.1/27 dev eth0
  }
}
```

The parameter `track_file` in `keepalived::vrrp::instance` is the list `track_file`:

```
  track_file {
    acme weight 1
  }
```

This can be a random string and references a `track_file` block with that name:

```
track_file acme {
  file     "/var/local/vrrp_track_file"
  weight      1
}
```

^ is created by `keepalived::vrrp::track_file` defined resource.

REFERENCE.md

@@ -1211,18 +1211,17 @@ Default value: `undef`
 
 ##### <a name="-keepalived--vrrp--instance--track_file"></a>`track_file`
 
-Data type: `Optional[Array[Stdlib::Absolutepath]]`
+Data type: `Optional[Array[String[1]]]`
 
-Define which file trackers to run (array).
+Define which file trackers to run. References a track_file block that can be created with keepalived::vrrp::track_file.
 
 Default value: `undef`
 
 ##### <a name="-keepalived--vrrp--instance--vrrp_track_file"></a>`vrrp_track_file`
 
-Data type: `Optional[Array[Stdlib::Absolutepath]]`
+Data type: `Optional[Array[String[1]]]`
 
-Define which file trackers to run (array).
-Deprecated, for keepalived < 2.1.0
+Define which file trackers to run. Deprecated, for keepalived < 2.1.0. References a vrrp_track_file block that can be created with keepalived::vrrp::vrrp_track_file.
 
 Default value: `undef`
 

manifests/vrrp/instance.pp

@@ -87,11 +87,10 @@
 #   Define which process trackers to run.
 #
 # @param track_file
-#   Define which file trackers to run (array).
+#   Define which file trackers to run. References a track_file block that can be created with keepalived::vrrp::track_file.
 #
 # @param vrrp_track_file
-#   Define which file trackers to run (array).
-#   Deprecated, for keepalived < 2.1.0
+#   Define which file trackers to run. Deprecated, for keepalived < 2.1.0. References a vrrp_track_file block that can be created with keepalived::vrrp::vrrp_track_file.
 #
 # @param track_interface
 #   Define which interface(s) to monitor.
@@ -208,8 +207,8 @@
   Optional[Variant[String, Sensitive[String]]] $auth_pass                 = undef,
   $track_script                                                           = undef,
   Optional[Array[String[1]]] $track_process                               = undef,
-  Optional[Array[Stdlib::Absolutepath]] $track_file                       = undef,
-  Optional[Array[Stdlib::Absolutepath]] $vrrp_track_file                  = undef,
+  Optional[Array[String[1]]] $track_file                                  = undef,
+  Optional[Array[String[1]]] $vrrp_track_file                             = undef,
   $track_interface                                                        = undef,
   $lvs_interface                                                          = undef,
   $virtual_ipaddress_int                                                  = undef,

spec/defines/keepalived_vrrp_instance_spec.rb

@@ -17,10 +17,10 @@
     'include keepalived'
   end
 
-  on_supported_os.each do |os, facts|
+  on_supported_os.each do |os, os_facts|
     context "on #{os}" do
       let(:facts) do
-        facts
+        os_facts
       end
 
       describe 'without parameters' do
@@ -1420,6 +1420,16 @@
             )
         }
       end
+
+      # explicit checks for strings, to prevent future people from enforcing Stdlib::Absolutepath
+      # See https://github.com/voxpupuli/puppet-keepalived/pull/312 for context
+      describe 'with track_file and vrrp_track_file' do
+        let :params do
+          mandatory_params.merge(track_file: ['acme', 'foo'], vrrp_track_file: ['bar', 'baz'])
+        end
+        it { is_expected.to contain_concat__fragment('keepalived.conf_vrrp_instance__NAME_').with_content(%r{track_file \{\n.*acme.*\n.*foo}) }
+        it { is_expected.to contain_concat__fragment('keepalived.conf_vrrp_instance__NAME_').with_content(%r{vrrp_track_file \{\n.*bar.*\n.*baz}) }
+      end
     end
   end
 end