[Backport] [2.x] The spotless should take care of unified imports ordering (test/ subprojects) (#9351)

[reta]

Backport of #9351 to 2.x

[opensearch-trigger-bot]

Compatibility status:

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

BUILD SUCCESSFUL in 25m 42s

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/22836/
• CommitID: a643c89

[codecov]

Codecov Report

Merging #9370 (a643c89) into 2.x (cdf6e67) will decrease coverage by 0.23%.
Report is 3 commits behind head on 2.x.
The diff coverage is n/a.

@@             Coverage Diff              @@
##                2.x    #9370      +/-   ##
============================================
- Coverage     70.92%   70.69%   -0.23%     
+ Complexity    57593    57455     -138     
============================================
  Files          4761     4761              
  Lines        271842   271842              
  Branches      40086    40086              
============================================
- Hits         192793   192190     -603     
- Misses        62554    63151     +597     
- Partials      16495    16501       +6     

Files Changed	Coverage Δ
...h/client/benchmark/ops/bulk/BulkBenchmarkTask.java	0.00% <ø> (ø)
...in/java/org/opensearch/plugin/noop/NoopPlugin.java	0.00% <ø> (ø)
...ch/plugin/noop/action/bulk/RestNoopBulkAction.java	0.00% <ø> (ø)
...ugin/noop/action/bulk/TransportNoopBulkAction.java	0.00% <ø> (ø)
.../noop/action/search/TransportNoopSearchAction.java	0.00% <ø> (ø)
...main/java/org/opensearch/client/ClusterClient.java	8.57% <ø> (ø)
...java/org/opensearch/client/GetAliasesResponse.java	88.75% <ø> (ø)
...main/java/org/opensearch/client/IndicesClient.java	1.77% <ø> (ø)
...rg/opensearch/client/IndicesRequestConverters.java	71.03% <ø> (+0.55%)	⬆️
.../main/java/org/opensearch/client/IngestClient.java	15.78% <ø> (ø)
... and 113 more

... and 481 files with indirect coverage changes