HBASE-27086 Fix graceful_stop cannot take previous balancer status by incompatibility of hbase shell prompt

[bitterfox]

https://issues.apache.org/jira/browse/HBASE-27086

There're 2 issues

• hbase shell shows prompt always even through echo "balance_switch false" | hbase shell -n (noninteractive mode or piped)
• irb now shows an empty line at end of the output, so tail -1 retrieve the empty line. need tail -2 | head -1 to retrieve true/false for previous balancer status

Need this patch in branch-2.4, 2.5, 2, 3, master

[Apache-HBase]

:confetti_ball: +1 overall

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		_ master Compile Tests _
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Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4490/1/artifact/yetus-general-check/output/Dockerfile
GITHUB PR	https://github.com/apache/hbase/pull/4490
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		227m 33s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4490/1/artifact/yetus-jdk11-hadoop3-check/output/Dockerfile
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Console output	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4490/1/console
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:confetti_ball: +1 overall

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+1 :green_heart:	dupname	0m 0s	No case conflicting files found.
+0 :ok:	shelldocs	0m 0s	Shelldocs was not available.
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		_ master Compile Tests _
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		_ Patch Compile Tests _
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		_ Other Tests _
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Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4490/2/artifact/yetus-general-check/output/Dockerfile
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uname	Linux 6043e5b5e80b 5.4.0-1068-aws #72~18.04.1-Ubuntu SMP Thu Mar 3 08:49:49 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
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Personality	dev-support/hbase-personality.sh
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versions	git=2.17.1 maven=3.6.3 shellcheck=0.4.6 rubocop=0.80.0
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:confetti_ball: +1 overall

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+0 :ok:	reexec	1m 10s	Docker mode activated.
-0 :warning:	yetus	0m 2s	Unprocessed flag(s): --brief-report-file --spotbugs-strict-precheck --whitespace-eol-ignore-list --whitespace-tabs-ignore-list --quick-hadoopcheck
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+1 :green_heart:	javadoc	2m 8s	the patch passed
		_ Other Tests _
+1 :green_heart:	unit	251m 18s	root in the patch passed.
		265m 34s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4490/2/artifact/yetus-jdk11-hadoop3-check/output/Dockerfile
GITHUB PR	https://github.com/apache/hbase/pull/4490
Optional Tests	javac javadoc unit
uname	Linux 2d5d3a07d442 5.4.0-90-generic #101-Ubuntu SMP Fri Oct 15 20:00:55 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/hbase-personality.sh
git revision	master / 9342653691
Default Java	AdoptOpenJDK-11.0.10+9
Test Results	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4490/2/testReport/
Max. process+thread count	3799 (vs. ulimit of 30000)
modules	C: hbase-shell . U: .
Console output	https://ci-hbase.apache.org/job/HBase-PreCommit-GitHub-PR/job/PR-4490/2/console
versions	git=2.17.1 maven=3.6.3
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