HBASE-25499 False-positive findbugs issue on branch-2.2

[petersomogyi]

HBase Nightly test on branch-2.2 reports warning on InputStream
cleanup while it is used in a try-with-resource block. This commit adds
a SuppressWarnings annotation.

[Apache-HBase]

🎊 +1 overall

Vote	Subsystem	Runtime	Comment
+0 🆗	reexec	2m 30s	Docker mode activated.
		_ Prechecks _
+1 💚	dupname	0m 0s	No case conflicting files found.
+1 💚	hbaseanti	0m 0s	Patch does not have any anti-patterns.
+1 💚	@author	0m 0s	The patch does not contain any @author tags.
-0 ⚠️	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.
		_ branch-2.2 Compile Tests _
+1 💚	mvninstall	3m 12s	branch-2.2 passed
+1 💚	compile	0m 27s	branch-2.2 passed
+1 💚	checkstyle	0m 20s	branch-2.2 passed
+1 💚	shadedjars	4m 3s	branch has no errors when building our shaded downstream artifacts.
+1 💚	javadoc	0m 25s	branch-2.2 passed
+0 🆗	spotbugs	0m 53s	Used deprecated FindBugs config; considering switching to SpotBugs.
+1 💚	findbugs	0m 51s	branch-2.2 passed
		_ Patch Compile Tests _
+1 💚	mvninstall	2m 51s	the patch passed
+1 💚	compile	0m 28s	the patch passed
+1 💚	javac	0m 28s	the patch passed
+1 💚	checkstyle	0m 18s	the patch passed
+1 💚	whitespace	0m 0s	The patch has no whitespace issues.
+1 💚	shadedjars	4m 1s	patch has no errors when building our shaded downstream artifacts.
+1 💚	hadoopcheck	25m 49s	Patch does not cause any errors with Hadoop 2.8.5 2.9.2 2.10.0 or 3.1.2 3.2.1.
+1 💚	javadoc	0m 23s	the patch passed
+1 💚	findbugs	0m 56s	the patch passed
		_ Other Tests _
+1 💚	unit	5m 7s	hbase-rest in the patch passed.
+1 💚	asflicense	0m 15s	The patch does not generate ASF License warnings.
		58m 19s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2877/1/artifact/out/Dockerfile
GITHUB PR	#2877
Optional Tests	dupname asflicense javac javadoc unit spotbugs findbugs shadedjars hadoopcheck hbaseanti checkstyle compile
uname	Linux d89fe867256d 4.15.0-112-generic #113-Ubuntu SMP Thu Jul 9 23:41:39 UTC 2020 x86_64 GNU/Linux
Build tool	maven
Personality	/home/jenkins/jenkins-agent/workspace/Base-PreCommit-GitHub-PR_PR-2877/out/precommit/personality/provided.sh
git revision	branch-2.2 / b223e84
Default Java	Oracle Corporation-1.8.0_275-b01
Test Results	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2877/1/testReport/
Max. process+thread count	2292 (vs. ulimit of 12500)
modules	C: hbase-rest U: hbase-rest
Console output	https://ci-hadoop.apache.org/job/HBase/job/HBase-PreCommit-GitHub-PR/job/PR-2877/1/console
versions	git=2.20.1 maven=3.6.3 findbugs=3.1.11
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[virajjasani]

+1