Backport integration tests to 2.x

[cwperks]

Stemming from discussion on #3182, the codeql check is failing with:

Task :compileIntegrationTestJava FAILED

https://github.com/opensearch-project/security/actions/runs/5870600207/job/15918932614?pr=3182

The integrationTest framework was introduced in a series of PRs into main and was intentionally not backported to 2.x[link to discussion]. No support for the integrationTest package exists on 2.x and no gradle task related to the integrationTest package should works on 2.x. We should backport these changes.

Task: Backport changes associated with the linked PR.

[stephen-crawford]

[Triage] Hi @cwperks, thank you for pointing this out. For the time being, it seems like the actionable task is going to be adding the integration tests to the 2.x line.

[cwperks]

Closing this issue as a duplicate. #3230 has more details on which PRs need to be backported.