YARN-11055. Add missing newline in cgroups-operations.c

[gerashegalov]

Description of PR

Adding missing newline characters in the end of fprintf format strings in cgroups-operations.c

How was this patch tested?

pseudo-distributed deploy https://github.com/apache/hadoop/blob/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/UsingGpus.md#distributed-shell--gpu-with-docker

For code changes:

• Does the title or this PR starts with the corresponding JIRA issue id (e.g. 'HADOOP-17799. Your PR title ...')?
• Object storage: have the integration tests been executed and the endpoint declared according to the connector-specific documentation?
• If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0?
• If applicable, have you updated the LICENSE, LICENSE-binary, NOTICE-binary files?

[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	0m 0s		Docker mode activated.
-1 ❌	docker	20m 57s		Docker failed to build yetus/hadoop:13467f45240.

Subsystem	Report/Notes
GITHUB PR	#3851
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3851/1/console
versions	git=2.17.1
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[hadoop-yetus]

💔 -1 overall

Vote	Subsystem	Runtime	Logfile	Comment
+0 🆗	reexec	22m 40s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
-1 ❌	test4tests	0m 0s		The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch.
			_ trunk Compile Tests _
+1 💚	mvninstall	36m 13s		trunk passed
+1 💚	compile	1m 18s		trunk passed
+1 💚	mvnsite	0m 46s		trunk passed
+1 💚	shadedclient	60m 37s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 37s		the patch passed
+1 💚	compile	1m 14s		the patch passed
+1 💚	cc	1m 14s		the patch passed
+1 💚	golang	1m 14s		the patch passed
+1 💚	javac	1m 14s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	mvnsite	0m 37s		the patch passed
+1 💚	shadedclient	22m 17s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	22m 40s		hadoop-yarn-server-nodemanager in the patch passed.
+1 💚	asflicense	0m 30s		The patch does not generate ASF License warnings.
		132m 3s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3851/2/artifact/out/Dockerfile
GITHUB PR	#3851
Optional Tests	dupname asflicense compile cc mvnsite javac unit codespell golang
uname	Linux c58be576f4eb 4.15.0-162-generic #170-Ubuntu SMP Mon Oct 18 11:38:05 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	trunk / 57a90c2
Default Java	Red Hat, Inc.-1.8.0_312-b07
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3851/2/testReport/
Max. process+thread count	604 (vs. ulimit of 5500)
modules	C: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager U: hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-3851/2/console
versions	git=2.9.5 maven=3.6.3
Powered by	Apache Yetus 0.14.0-SNAPSHOT https://yetus.apache.org

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[gerashegalov]

The patch doesn't appear to include any new or modified tests. Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch.

I think the patch is too trivial to add a test but open to a review feedback otherwise

[tgravescs]

the changes look fine to me but would be good for someone else active in Hadoop code to take a look.

[aajisaka]

LGTM

[gerashegalov]

Thank you @tgravescs and @aajisaka for reviews!