[2.x] Deprecate public methods and variables with master term in package 'org.opensearch.action.support.master' (#3617)

[tlfeng]

Description

Backport PR #3617 / commit 60d7a09 , and PR #3644 to 2.x branch

Replace master terminology by cluster manager in the public Java APIs to support inclusive language.
The PR deal with the public method and variable in the package org.opensearch.action.support.master (which is now renamed to org.opensearch.action.support.clustermanager)

• Rename public methods and variables with "master" name (listed below) by "cluster manager", including all the references to the methods/variables.
• Add back the methods and variables in the old name, point them to call the method/variable in new name, and add deprecated annotation to them.

The renaming changes are done by the Rename refactoring feature of IntelliJ IDEA, so that both the definition and reference can be renamed.

Renamed and deprecated method and variable list:
In class MasterNodeOperationRequestBuilder -
final RequestBuilder setMasterNodeTimeout(TimeValue timeout)
final RequestBuilder setMasterNodeTimeout(String timeout)

In class MasterNodeRequest -
TimeValue DEFAULT_MASTER_NODE_TIMEOUT
TimeValue masterNodeTimeout
Request masterNodeTimeout(TimeValue timeout)
Request masterNodeTimeout(String timeout)
TimeValue masterNodeTimeout()

In class TransportMasterNodeAction -
void masterOperation(Request request, ClusterState state, ActionListener listener)
void masterOperation(Task task, Request request, ClusterState state, ActionListener listener)
String getMasterActionName(DiscoveryNode node)

In class TransportClusterInfoAction -
void masterOperation(final Request request, final ClusterState state, final ActionListener listener)
void doMasterOperation(Request request, String[] concreteIndices, ClusterState state, ActionListener listener)

Issues Resolved

The last step for issue #3542

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

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[opensearch-ci-bot]

✅   Gradle Check success d8d0640
Log 6201

Reports 6201

[opensearch-ci-bot]

✅   Gradle Check success 4c9f2f1
Log 6204

Reports 6204

[tlfeng]

@reta Thank you your time in the review!