[BUG] The spotless should take care of unified imports ordering (test/ subprojects)

[owaiskazi19]

Description

Came out of #9082 (review), the spotless does not enforce any formatting on order of imports statements, as such those are very chaotic in the codebase.

Related Issues

Part of #9306, since there are ~3k files changed across all subprojects, sending smaller pull requests for each of the subproject.

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.search.SearchWeightedRoutingIT.testSearchAggregationWithNetworkDisruption_FailOpenEnabled

• URL: https://build.ci.opensearch.org/job/gradle-check/22765/
• CommitID: 2337b4e
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov]

Codecov Report

Merging #9351 (2337b4e) into main (1342578) will increase coverage by 0.04%.
Report is 2 commits behind head on main.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main    #9351      +/-   ##
============================================
+ Coverage     71.07%   71.12%   +0.04%     
- Complexity    57387    57436      +49     
============================================
  Files          4777     4777              
  Lines        270705   270705              
  Branches      39565    39565              
============================================
+ Hits         192410   192536     +126     
+ Misses        62052    61953      -99     
+ Partials      16243    16216      -27     

see 456 files with indirect coverage changes

[opensearch-trigger-bot]

Compatibility status:

> Task :checkCompatibility
Incompatible components: [https://github.com/opensearch-project/alerting.git, https://github.com/opensearch-project/index-management.git, https://github.com/opensearch-project/asynchronous-search.git, https://github.com/opensearch-project/common-utils.git, https://github.com/opensearch-project/cross-cluster-replication.git, https://github.com/opensearch-project/notifications.git, https://github.com/opensearch-project/security-analytics.git]
Compatible components: [https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/anomaly-detection.git, https://github.com/opensearch-project/sql.git, https://github.com/opensearch-project/job-scheduler.git, https://github.com/opensearch-project/observability.git, https://github.com/opensearch-project/reporting.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/geospatial.git, https://github.com/opensearch-project/neural-search.git, https://github.com/opensearch-project/performance-analyzer.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/performance-analyzer-rca.git, https://github.com/opensearch-project/opensearch-oci-object-storage.git]

BUILD SUCCESSFUL in 31m 58s

[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Navigate to the root of your repository
cd $(git rev-parse --show-toplevel)
# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/OpenSearch/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/OpenSearch/backport-2.x
# Create a new branch
git switch --create backport/backport-9351-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 a1faafed3ad88dd8f863e40766b7f035df0ed99b
# Push it to GitHub
git push --set-upstream origin backport/backport-9351-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/OpenSearch/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-9351-to-2.x.

[reta]

Backporting after #9352

[reta]

@owaiskazi19 I'll take care of backport, thanks for help!