HADOOP-18878: deprecate fs.s3a.multipart.purge

[ajfabbri]

Description of PR

From HADOOP-18878:

the fs.s3a.multipart.purge option has been in for a long time, to help avoid running up costs from incomplete uploads, especially during testing.

but

adds overhead on startup (list + delete)
dangerous if one client has a very short lifespan; all active s3a committer jobs will be broken
obsoleted by s3 lifecycle rules
and "hadoop s3guard uploads" cli.
proposed: deprecate for the next release, delete after.

How was this patch tested?

s3a integration tests run against localstack S3.

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?
• [na] If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under ASF 2.0?
• [na ] If applicable, have you updated the LICENSE, LICENSE-binary, NOTICE-binary files?

AI Tooling

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[hadoop-yetus]

🎊 +1 overall

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+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.
			_ trunk Compile Tests _
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			_ Patch Compile Tests _
+0 🆗	mvndep	0m 29s		Maven dependency ordering for patch
+1 💚	mvninstall	1m 50s		the patch passed
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+1 💚	javac	15m 7s		the patch passed
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+1 💚	javadoc	2m 20s		the patch passed with JDK Ubuntu-17.0.18+8-Ubuntu-124.04.1
+1 💚	spotbugs	5m 5s		the patch passed
+1 💚	shadedclient	28m 55s		patch has no errors when building and testing our client artifacts.
			_ Other Tests _
+1 💚	unit	22m 30s		hadoop-common in the patch passed.
+1 💚	unit	3m 42s		hadoop-aws in the patch passed.
+1 💚	asflicense	1m 14s		The patch does not generate ASF License warnings.
		239m 35s

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Docker	ClientAPI=1.54 ServerAPI=1.54 base: https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8353/1/artifact/out/Dockerfile
GITHUB PR	#8353
Optional Tests	dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient codespell detsecrets xmllint spotbugs checkstyle markdownlint
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[steveloughran]

which s3 store did you test against?

[steveloughran]

LGTM, just need that declaration of which s3 store you ran the tests against, and what maven parameters you supplied