Fix tests for concurrent search

[Gankris96]

Description

This change ensures that the indexRandomForConcurrentSearch function, that is used to create more segments for concurrent search tests is invoked from the tests within this PR to test concurrent search use-cases where multiple slices are created based on segment count.
The change affects the following tests -

MetadataFetchingIT.java
SortFromPluginIT.java
SuggestSearchIT.java
SourceFetchingIT.testSourceDefaultBehavior
GeoDistanceIT.testGeoDistanceFilter
FieldSortIT.testTrackScores
SearchScrollIT.testScrollRewrittenToMatchNoDocs

Related Issues

• Resolves Update the indexRandom function to create more segments #10247

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]

Compatibility status:

Checks if related components are compatible with change 5a02ff4

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/custom-codecs.git, https://github.com/opensearch-project/cross-cluster-replication.git, https://github.com/opensearch-project/performance-analyzer-rca.git, https://github.com/opensearch-project/opensearch-oci-object-storage.git, https://github.com/opensearch-project/ml-commons.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: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/29691/
• CommitID: f38f66e
  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?

[jed326]

Flakey tests:

https://build.ci.opensearch.org/job/gradle-check/29691/

• [BUG] Test org.opensearch.indices.replication.SegmentReplicationSuiteIT is flaky #9499
• [BUG] org.opensearch.http.SearchRestCancellationIT.testAutomaticCancellationDuringFetchPhase flaky #5426

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/29694/
• CommitID: 6288795

[github-actions]

❌ Gradle check result for 3e4c8a3: FAILURE

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 result for 6288795: FAILURE

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 result for 5a02ff4: SUCCESS