Fixing concurrent search tests with one slice

[ticheng-aws]

Description

This PR is to make sure that the index random function which is used in multiple classes has creation of multiple segments to test the concurrent search code path in the following IT:

SimpleNestedIT
PitMultiNodeIT
QueryStringIT
ScriptScoreQueryIT

This change will fix 31 concurrent search tests.

Related Issues

#10247
Concurrent search case muted pending fix:
#11065

Check List

• New functionality includes testing.
• All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Failing checks are inspected and point to the corresponding known issue(s) (See: Troubleshooting Failing Builds)
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)
• Public documentation issue/PR created

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: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/29490/
• CommitID: 6d92877
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[ticheng-aws]

@neetikasinghal and @sohami please review.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/29494/
• CommitID: 1dfb248
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Compatibility status:

Checks if related components are compatible with change 08d57b6

Incompatible components

Incompatible components: [https://github.com/opensearch-project/performance-analyzer.git]

Skipped components

Compatible components

Compatible components: [https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/alerting.git, https://github.com/opensearch-project/index-management.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/asynchronous-search.git, https://github.com/opensearch-project/observability.git, https://github.com/opensearch-project/common-utils.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/reporting.git, https://github.com/opensearch-project/security-analytics.git, https://github.com/opensearch-project/cross-cluster-replication.git, https://github.com/opensearch-project/custom-codecs.git, https://github.com/opensearch-project/performance-analyzer-rca.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/opensearch-oci-object-storage.git, https://github.com/opensearch-project/geospatial.git, https://github.com/opensearch-project/notifications.git, https://github.com/opensearch-project/neural-search.git]

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/29495/
• CommitID: 3ce73bf

[codecov]

Codecov Report

Merging #11071 (f09a93a) into main (63aff16) will decrease coverage by 0.04%.
Report is 9 commits behind head on main.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main   #11071      +/-   ##
============================================
- Coverage     71.29%   71.25%   -0.04%     
- Complexity    58742    58764      +22     
============================================
  Files          4872     4872              
  Lines        276777   276780       +3     
  Branches      40240    40241       +1     
============================================
- Hits         197316   197219      -97     
- Misses        62943    63094     +151     
+ Partials      16518    16467      -51     

Files	Coverage Δ
...s/replication/SegmentReplicationTargetService.java	56.17% <100.00%> (+0.56%)	⬆️

... and 482 files with indirect coverage changes

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/29513/
• CommitID: 08d57b6
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/29514/
• CommitID: f09a93a
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/29544/
• CommitID: f09a93a