[Remote Store] Add metadata prefix to Remote Translog Metadata file

[gbbafna]

Description

Added metadata prefix to remote translog metadata files. This serves two purpose

1. Follow convention used in Remote Segment Store metadata .
2. Ignore the extra files which can generated by different OS.

Related Issues

#8834

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: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/21064/
• CommitID: f43700d
  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?

[linuxpi]

LGTM. 1 minor comment

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/21069/
• CommitID: f43700d
  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/21073/
• CommitID: f43700d
  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?

[gbbafna]

* What went wrong:
Execution failed for task ':distribution:bwc:staged:buildBwcLinuxTar'.
> Building 2.9.0 didn't generate expected file /var/jenkins/workspace/gradle-check/search/distribution/bwc/staged/build/bwc/checkout-2.9/distribution/archives/linux-tar/build/distributions/opensearch-min-2.9.0-SNAPSHOT-linux-x64.tar.gz

I am getting gradle failures despite retries. All the tests are passing . Looks like there is some issue with jenkins .

[linuxpi]

seeing similar failure here - #8812

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/21227/
• CommitID: 73e69d0
  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?

[gbbafna]

Failing tests are both flaky and are passing locally

    org.opensearch.search.suggest.CompletionSuggestSearchIT.testSkipDuplicates
    org.opensearch.index.IndexServiceTests.testAsyncTranslogTrimTaskOnClosedIndex

#8932
#6124

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      3 org.opensearch.cluster.routing.allocation.decider.DiskThresholdDeciderIT.testIndexCreateBlockIsRemovedWhenAnyNodesNotExceedHighWatermarkWithAutoReleaseEnabled

• URL: https://build.ci.opensearch.org/job/gradle-check/21236/
• CommitID: 73e69d0
  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 #8914 (73e69d0) into main (3952d5e) will increase coverage by 0.00%.
Report is 2 commits behind head on main.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##               main    #8914   +/-   ##
=========================================
  Coverage     71.12%   71.12%           
- Complexity    57212    57256   +44     
=========================================
  Files          4759     4759           
  Lines        269881   269881           
  Branches      39488    39488           
=========================================
+ Hits         191943   191948    +5     
- Misses        61752    61754    +2     
+ Partials      16186    16179    -7     

Files Changed	Coverage Δ
...ex/translog/transfer/TranslogTransferMetadata.java	84.61% <ø> (ø)
...ex/translog/transfer/BlobStoreTransferService.java	88.88% <100.00%> (ø)
...dex/translog/transfer/TranslogTransferManager.java	77.94% <100.00%> (ø)

... and 453 files with indirect coverage changes