HADOOP-18160 Avoid shading wildfly.openssl runtime dependency

[andreAmorimF]

Description of PR

org.wildfly.openssl is a runtime library and its references are being shaded on Hadoop, breaking the integration with other frameworks like Spark, whenever the "fs.s3a.ssl.channel.mode" is set to "openssl". The error produced in this situation is:

Suppressed: java.lang.NoClassDefFoundError: org/apache/hadoop/shaded/org/wildfly/openssl/OpenSSLProvider

This PR aims to exclude org.wildfly.openssl from the shade, keeping the original namespace to be referenced whenever this runtime dependency is added to the classpath.

How was this patch tested?

Used the patched jar on a Spark 3.2.1 application which now correctly references the org.wildfly.openssl dependency added to the classpath.

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?

[steveloughran]

thanks.

will have to raise this with on the hadoop common list to discuss what to do here.
i don't see any uses of the library other than hadoop azure and hadoop aws, so there isn't much else to worry about

[steveloughran]

raised on the list...if nobody objects i will merge (remind me if I don't)

[steveloughran]

+1. nobody said no, and we do the same for other optional classes.

[steveloughran]

ok, merged in to branch-3.3 and trunk. thank you!