YARN-11707. Fix UT checkstyle error in TestRMAdminCLI

[granewang]

In patch https://github.com/apache/hadoop/pull/6957 ,checkstyle error always exists ,Fix all the checkstyle error like: ./hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/cli/TestRMAdminCLI.java:781: testError(new String[] { "-help", "-xxxxx" },:30: '{' is followed by whitespace. [NoWhitespaceAfter]

[hadoop-yetus]

:broken_heart: -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 :ok:	reexec	0m 0s		Docker mode activated.
-1 :x:	docker	0m 25s		Docker failed to build run-specific yetus/hadoop:tp-10256}.

Subsystem	Report/Notes
GITHUB PR	https://github.com/apache/hadoop/pull/6958
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6958/1/console
versions	git=2.34.1
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[hadoop-yetus]

:broken_heart: -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 :ok:	reexec	0m 0s		Docker mode activated.
-1 :x:	docker	0m 10s		Docker failed to build run-specific yetus/hadoop:tp-23550}.

Subsystem	Report/Notes
GITHUB PR	https://github.com/apache/hadoop/pull/6958
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6958/2/console
versions	git=2.34.1
Powered by	Apache Yetus 0.14.0 https://yetus.apache.org

This message was automatically generated.

[hadoop-yetus]

:broken_heart: -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 :ok:	reexec	0m 0s		Docker mode activated.
-1 :x:	docker	0m 10s		Docker failed to build run-specific yetus/hadoop:tp-16754}.

Subsystem	Report/Notes
GITHUB PR	https://github.com/apache/hadoop/pull/6958
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-6958/3/console
versions	git=2.34.1
Powered by	Apache Yetus 0.14.0 https://yetus.apache.org

This message was automatically generated.

[granewang]

Why always "Docker failed to build" ?

[github-actions[bot]]

We're closing this stale PR because it has been open for 100 days with no activity. This isn't a judgement on the merit of the PR in any way. It's just a way of keeping the PR queue manageable. If you feel like this was a mistake, or you would like to continue working on it, please feel free to re-open it and ask for a committer to remove the stale tag and review again. Thanks all for your contribution.