[exporter/elasticsearch] use v8 client, drop support for EOL versions of ES #37333
+70
−45
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Description
Update to go-elasticsearch v8, which breaks support for older versions of Elasticsearch v7. The non-EOL v7.17.x versions of Elasticsearch are still supported by the exporter. Add an explicit statement to the README that EOL versions are not supported by the exporter.
Updating to the v8 client allows us to turn on OTel tracing instrumentation for the go-elasticsearch client.
Link to tracking issue
Closes #32454
Testing
(7.10 predates the product check protocol that was added to go-elasticsearch v8.)
Documentation
Updated README.