Rename BecomeMasterTask to BecomeClusterManagerTask in JoinTaskExecutor

[tlfeng]

Description

There is a ClusterStateTask with identifier _BECOME_MASTER_TASK_ used to indicate the node to be the cluster manager node when joining the cluster.

To support inclusive language, and finally change the "master" terminology, I made the following plan:

In version 2.0:

• Deprecate the task identifier _BECOME_MASTER_TASK_
• Add alternative name _BECOME_CLUSTER_MANAGER_TASK_
• Modify the method that identify the task isBecomeMasterTask() to accept the 2 names

In version 3.0:

• Remove the current task identifier _BECOME_MASTER_TASK_

The reason not change the name in-place:
The related methods are public methods, in case there are clients that call these method in a mixed version cluster of 1.x and 2.x, this way can keep the compatibility of using these methods with version 1.x cluster.

Issues Resolved

A part of #1548

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

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.

[opensearch-ci-bot]

✅   Gradle Check success aa53f43
Log 4846

Reports 4846

[tlfeng]

@reta and @andrross Thanks a lot for your review! 👍

[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-2.x 2.x
# Navigate to the new working tree
cd .worktrees/backport-2.x
# Create a new branch
git switch --create backport/backport-3099-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 017773c62d345edac607b4474bac99f200c560f8
# Push it to GitHub
git push --set-upstream origin backport/backport-3099-to-2.x
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-3099-to-2.x.

[opensearch-trigger-bot]

The backport to 2.0 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-2.0 2.0
# Navigate to the new working tree
cd .worktrees/backport-2.0
# Create a new branch
git switch --create backport/backport-3099-to-2.0
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 017773c62d345edac607b4474bac99f200c560f8
# Push it to GitHub
git push --set-upstream origin backport/backport-3099-to-2.0
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-2.0

Then, create a pull request where the base branch is 2.0 and the compare/head branch is backport/backport-3099-to-2.0.