HADOOP-18465. Fix S3A SSE test skip when encryption is disabled

[dannycjones]

Description of PR

Note: This is the same as #4925 but against branch-3.3.

When running integration tests against an S3-compatible endpoint without SSE support, tests would fail despite marking test.fs.s3a.encryption.enabled as false.

How was this patch tested?

Against eu-west-1, no special configuration. Encryption enabled.

Two test failures, look unrelated.

[INFO] Results:
[INFO]
[ERROR] Failures:
[ERROR]   ITestS3APrefetchingInputStream.testRandomReadLargeFile:158 [Gauge named stream_read_blocks_in_cache with expected value 2] expected:<[2]L> but was:<[1]L>
[ERROR] Errors:
[ERROR]   ITestS3AFailureHandling.testMultiObjectDeleteLargeNumKeys » NullPointer
[INFO]
[ERROR] Tests run: 1143, Failures: 1, Errors: 1, Skipped: 186

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	10m 51s		Docker mode activated.
			_ Prechecks _
+1 💚	dupname	0m 0s		No case conflicting files found.
+0 🆗	codespell	0m 0s		codespell was not available.
+0 🆗	detsecrets	0m 0s		detect-secrets was not available.
+1 💚	@author	0m 0s		The patch does not contain any @author tags.
+1 💚	test4tests	0m 0s		The patch appears to include 1 new or modified test files.
			_ branch-3.3 Compile Tests _
+1 💚	mvninstall	39m 36s		branch-3.3 passed
+1 💚	compile	0m 34s		branch-3.3 passed
+1 💚	checkstyle	0m 31s		branch-3.3 passed
+1 💚	mvnsite	0m 44s		branch-3.3 passed
+1 💚	javadoc	0m 35s		branch-3.3 passed
+1 💚	spotbugs	1m 15s		branch-3.3 passed
+1 💚	shadedclient	25m 48s		branch has no errors when building and testing our client artifacts.
			_ Patch Compile Tests _
+1 💚	mvninstall	0m 37s		the patch passed
+1 💚	compile	0m 29s		the patch passed
+1 💚	javac	0m 29s		the patch passed
+1 💚	blanks	0m 0s		The patch has no blanks issues.
+1 💚	checkstyle	0m 17s		the patch passed
+1 💚	mvnsite	0m 33s		the patch passed
+1 💚	javadoc	0m 22s		the patch passed
+1 💚	spotbugs	1m 8s		the patch passed
+1 💚	shadedclient	25m 30s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	2m 7s		hadoop-aws in the patch passed.
+1 💚	asflicense	0m 33s		The patch does not generate ASF License warnings.
		111m 44s

Subsystem	Report/Notes
Docker	ClientAPI=1.41 ServerAPI=1.41 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4977/1/artifact/out/Dockerfile
GITHUB PR	#4977
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient spotbugs checkstyle codespell detsecrets
uname	Linux 7ff1fca53413 4.15.0-192-generic #203-Ubuntu SMP Wed Aug 10 17:40:03 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
Build tool	maven
Personality	dev-support/bin/hadoop.sh
git revision	branch-3.3 / 0c1fb26
Default Java	Private Build-1.8.0_342-8u342-b07-0ubuntu1~18.04-b07
Test Results	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4977/1/testReport/
Max. process+thread count	532 (vs. ulimit of 5500)
modules	C: hadoop-tools/hadoop-aws U: hadoop-tools/hadoop-aws
Console output	https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-4977/1/console
versions	git=2.17.1 maven=3.6.0 spotbugs=4.2.2
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[dannycjones]

Hey @steveloughran, this should be ready for backport. (backport of #4925)