Make all instrumentation gems compatible with JRuby

[plantfansam]

We support JRuby on a best effort basis. Unfortunately, some of our instrumentation is not compatible with JRuby. Specifically, the following gems are not compatible:

• instrumentation-action_pack
• instrumentation-action_view
• instrumentation-active_model_serializers
• instrumentation-active_record
• instrumentation-active_support
• instrumentation-aws_sdk
• instrumentation-delayed_job
• instrumentation-graphql
• instrumentation-http
• instrumentation-http_client
• instrumentation-koala
• instrumentation-lmdb
• instrumentation-rack
• instrumentation-rails

This ticket will be complete when our CI build successfully runs JRuby specs against every gem in the list above.

To run the specs for a given gem with JRuby in CI, delete the gem from the JRuby filter stanzas (1, 2) in .github/workflows/ci.yml.

Incremental progress against this issue (i.e. fixing one gem at a time!) is very welcome. We will not worry about fixing the gems in one pass!

---

Note: this ticket came out of #4

[github-actions]

👋 This issue has been marked as stale because it has been open with no activity. You can: comment on the issue or remove the stale label to hold stale off for a while, add the keep label to hold stale off permanently, or do nothing. If you do nothing this issue will be closed eventually by the stale bot.