Test failure v2.0.0#mixedClusterTest o.o.backwards.ExceptionIT caused by 'GET _cat/master' deprecation warning

[tlfeng]

Is your feature request related to a problem? Please describe.
The test ExceptionIT.testOpenSearchException() is broken, because it uses a deprecated REST API path _cat/master.
Code: https://github.com/opensearch-project/OpenSearch/blob/1.3.1/qa/mixed-cluster/src/test/java/org/opensearch/backwards/ExceptionIT.java#L50
The test failure was found in #2744 (comment)

The test uses High-Level-Rest-Client, those tests treat warning as failure, and using deprecated REST API will cause deprecation warning. The path _cat/master was deprecated in PR #2404 / commit 3da9eb6

Describe the solution you'd like
Either:

1. Allow deprecation warning in the specific test
2. Avoid calling GET _cat/master in all versions or version >=2.0 in this test

Describe alternatives you've considered
n/a

Additional context
Related to PR #2702, which is a temporary way to make HLRC allow the deprecation warning.
Related to issue #1549 which deprecate the REST API with master terminology.

test failure detail:

REPRODUCE WITH: ./gradlew ':qa:mixed-cluster:v2.0.0#mixedClusterTest' --tests "org.opensearch.backwards.ExceptionIT.testOpensearchException" -Dtests.seed=D5F130EEE0745C2A -Dtests.security.manager=true -Dtests.jvm.argline="-XX:TieredStopAtLevel=1 -XX:ReservedCodeCacheSize=64m" -Dtests.locale=ru-RU -Dtests.timezone=CNT -Druntime.java=17

org.opensearch.backwards.ExceptionIT > testOpensearchException FAILED
    org.opensearch.client.WarningFailureException: method [GET], host [http://127.0.0.1:33867], URI [_cat/master?h=id], status line [HTTP/1.1 200 OK]
    Warnings: [[GET /_cat/master] is deprecated! Use [GET /_cat/cluster_manager] instead.]
    TDvNsrtlRN-XVfX6m5x5Dw
        at __randomizedtesting.SeedInfo.seed([D5F130EEE0745C2A:7A08F576466769D0]:0)
        at app//org.opensearch.client.RestClient.convertResponse(RestClient.java:346)
        at app//org.opensearch.client.RestClient.performRequest(RestClient.java:320)
        at app//org.opensearch.client.RestClient.performRequest(RestClient.java:295)
        at app//org.opensearch.backwards.ExceptionIT.logClusterNodes(ExceptionIT.java:50)
        at app//org.opensearch.backwards.ExceptionIT.testOpensearchException(ExceptionIT.java:28)