Add Integration Tests for Workload Management CRUD APIs

[ruai0511]

Add Integration Tests for workload management CRUD APIs in plugin
For more information regarding workload management, refer to this RFC: #12342.

This IT can be run using

./gradlew ':plugins:workload-management:javaRestTest' \
  --tests "org.opensearch.rest.WorkloadManagementRestIT"

Check List

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

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 result for 4b0f7a0: 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 870aff0: 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 7f88472: FAILURE

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[sandeshkr419]

I think we can refactor some request bodies with json utilities to make these tests more readable:

 public static String getCreateJson(String name, String resiliencyMode, double cpu, double memory) {
        return "{\n" +
            "    \"name\": \"" + name + "\",\n" +
            "    \"resiliency_mode\": \"" + resiliencyMode + "\",\n" +
            "    \"resource_limits\": {\n" +
            "        \"cpu\" : " + cpu + ",\n" +
            "        \"memory\" : " + memory + "\n" +
            "    }\n" +
            "}";
    }

    public static String getUpdateJson(String resiliencyMode, double cpu, double memory) {
        return "{\n" +
            "    \"resiliency_mode\": \"" + resiliencyMode + "\",\n" +
            "    \"resource_limits\": {\n" +
            "        \"cpu\" : " + cpu + ",\n" +
            "        \"memory\" : " + memory + "\n" +
            "    }\n" +
            "}";
    }

[github-actions]

❕ Gradle check result for f81637f: 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.

[github-actions]

❌ Gradle check result for 51e3c08: 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 3ab8324: 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 3ab8324: 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 3ab8324: FAILURE

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[github-actions]

❌ Gradle check result for 3ab8324: FAILURE

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[jainankitk]

@ruai0511 - you need to merge from main:

org.opensearch.qa.verify_version_constants.VerifyVersionConstantsIT.testLuceneVersionConstant
Failing for the past 1 build (Since
[#49165](https://build.ci.opensearch.org/job/gradle-check/49165/) )
[Took 0.53 sec.](https://build.ci.opensearch.org/job/gradle-check/49165/testReport/junit/org.opensearch.qa.verify_version_constants/VerifyVersionConstantsIT/testLuceneVersionConstant/history)
Error Message

java.lang.AssertionError: 
Expected: <9.12.0>
     but: was <9.11.1>

[github-actions]

❌ Gradle check result for 4fb7e69: 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 4fb7e69: 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 4fb7e69:

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 4fb7e69: UNSTABLE

• TEST FAILURES:

      1 org.opensearch.indices.replication.SegmentReplicationAllocationIT.testSingleIndexShardAllocation

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]

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/OpenSearch/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/OpenSearch/backport-2.x
# Create a new branch
git switch --create backport/backport-15955-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 b3b8c9b61e90c62c63eca14af0969e2071e79b14
# Push it to GitHub
git push --set-upstream origin backport/backport-15955-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/OpenSearch/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-15955-to-2.x.