[Backport 1.x] Support for Google Application Default Credentials (#8394)

[yallen-ic]

backport #8394 to 1.x

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/32946/
• CommitID: 50e2e8d

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/33208/
• CommitID: 324e57f

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/33335/
• CommitID: eeacdde

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/33338/
• CommitID: 90d96ad

[codecov]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (8560f93) 77.65% compared to head (fdfe1b9) 77.61%.
Report is 2 commits behind head on 1.x.

Files	Patch %	Lines
...ories/gcs/GoogleApplicationDefaultCredentials.java	75.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                1.x   #12104      +/-   ##
============================================
- Coverage     77.65%   77.61%   -0.04%     
  Complexity    58796    58796              
============================================
  Files          4223     4224       +1     
  Lines        253560   253577      +17     
  Branches      38701    38702       +1     
============================================
- Hits         196897   196819      -78     
- Misses        40666    40760      +94     
- Partials      15997    15998       +1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[yallen-ic]

Hi @deshsidd, I have fixed up the failing Gradle checks. Could you please have a re-review when you get a chance? We will really appreciate it.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/34012/
• CommitID: 922e434

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/34014/
• CommitID: fdfe1b9

[yallen-ic]

Hi @pajuric, changelog is added and the tests has all passed. We will really appreciate it if you could escalate this as per discussion with Arjun.

[dblock]

@reta @andrross have been ween backporting features into 1.x?

[andrross]

@dblock Per the maintenance policy:

The software maintainers will not back-port fixes or features to versions outside of the maintenance window. That said, PRs with said back-ports are welcome and will follow the project’s review process. No new releases will result from these changes, but interested parties can create their own distribution from the updated source after the PRs are merged.

We won't backport a feature like this into a patch release (1.3.x) and have no plans to release a 1.4 version. However, if @yallen-ic and folks are interested in building their own distribution, then per my understanding of the policy we should accept this backport. @yallen-ic Are you intending to build your own 1.x distribution with this feature?

[dblock]

Thanks @andrross, let's close this?

[yallen-ic]

@andrross Thanks very much for the reply and info. Building our own distribution is out of scope of what we want to do, so we will be closing this PR.