[Remote Migration] Fix remote recovery IT

[gbbafna]

Description

1. Do bulk ingestion in remote migration in ITs
2. Slow down recovery chunk size to simulate real world relocation time
3. Fix Remote Replica IT

Check List

• Functionality includes testing.
• API changes companion pull request created, if applicable.
• Public documentation issue/PR created, if applicable.

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[github-actions]

❌ Gradle check result for cd5fcc7: 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 cd5fcc7: SUCCESS

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.69%. Comparing base (b15cb0c) to head (5c89fc0).
Report is 701 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #14223      +/-   ##
============================================
+ Coverage     71.42%   71.69%   +0.27%     
- Complexity    59978    62064    +2086     
============================================
  Files          4985     5118     +133     
  Lines        282275   291829    +9554     
  Branches      40946    42188    +1242     
============================================
+ Hits         201603   209240    +7637     
- Misses        63999    65289    +1290     
- Partials      16673    17300     +627     

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[github-actions]

❌ Gradle check result for 1c3a788: 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 5c89fc0: UNSTABLE

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[opensearch-trigger-bot]

This PR is stalled because it has been open for 30 days with no activity.

[opensearch-trigger-bot]

This PR is stalled because it has been open for 30 days with no activity.

[github-actions]

❌ Gradle check result for c8ed1da: 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 d626778: 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?