[Refactor] Improve asynchronous test cases format

[peternied]

Description

Improve asynchronous test cases format

• Created AsyncActions to help generate and collect results
• Use of CountDownLatch to trigger requests to run concurrently
• Shrunk existing test cases by 2.7 times

Issues Resolved

• Follow up to some outstanding feedback from Use new instance of Decompressor on channel initialization #3583

Check List

• New functionality includes testing
• New functionality has been documented
• Commits are signed per the DCO using --signoff

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.

[codecov]

Codecov Report

Merging #3601 (5309a6e) into main (499db78) will increase coverage by 0.00%.
Report is 4 commits behind head on main.
The diff coverage is n/a.

❗ Current head 5309a6e differs from pull request most recent head 27969f5. Consider uploading reports for the commit 27969f5 to get more accurate results

@@            Coverage Diff            @@
##               main    #3601   +/-   ##
=========================================
  Coverage     64.90%   64.90%           
  Complexity     3638     3638           
=========================================
  Files           284      284           
  Lines         20616    20619    +3     
  Branches       3390     3391    +1     
=========================================
+ Hits          13381    13383    +2     
  Misses         5555     5555           
- Partials       1680     1681    +1     

see 3 files with indirect coverage changes

[peternied]

@cwperks here are those improvements from the first PR, let me know what you think

[cwperks]

@peternied Looks good to me. I left a couple of questions to make sure I understand how the AsyncActions works and the new test log4j property.

[DarshitChanpura]

looks good to me @peternied . Just some nits and question to understand the update to log4j properties

[peternied]

@cwperks Could you take another look at this change?

[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Navigate to the root of your repository
cd $(git rev-parse --show-toplevel)
# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/security/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/security/backport-2.x
# Create a new branch
git switch --create backport/backport-3601-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 1ad8cf480cd31d2fd10fdb16e974816cb64fe0a8
# Push it to GitHub
git push --set-upstream origin backport/backport-3601-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/security/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-3601-to-2.x.

[peternied]

Manually backported to 2.x because of the apache imports that were using v5