hawkBit::REST:Documentation: fix build with openjdk 17

[martinetd]

hawkBit no longer built after upgrading the jvm from openjdk 11 to 17:
[ERROR] Failed to execute goal org.asciidoctor:asciidoctor-maven-plugin:1.5.2:process-asciidoc (generate-docs) on project hawkbit-rest-docs: Execution generate-docs of goal org.asciidoctor:asciidoctor-maven-plugin:1.5.2:process-asciidoc failed: (LoadError) load error: jruby/java/java_ext/java.lang -- java.lang.reflect.InaccessibleObjectException: Unable to make protected native java.lang.Object java.lang.Object.clone() throws java.lang.CloneNotSupportedException accessible: module java.base does not "opens java.lang" to unnamed module @fefbafd -> [Help 1]

Explicitely adding the jruby dependency to the asciidoctor plugin seems
to make this work, and does not break compilation with older jdk

[hawkbit-bot]

Can one of the admins verify this patch?

[martinetd]

I'll update the commit with my sign-off once I've obtained permission from my employer to sign the ECA, as it apparently involves them as well.

[hawkbit-bot]

Thanks @martinetd for taking the time to contribute to hawkBit! We really appreciate this. Make yourself comfortable while I'm looking for a committer to help you with your contribution.
Please make sure you read the contribution guide and signed the Eclipse Contributor Agreement (ECA).

[martinetd]

Hmm, I just signed the ECA but the revalidation page doesn't seem to agree. I'll try a bit later assuming it might take time to propagate.
Commit message was adjusted to add sign-off line.

EDIT: ECA worked revalidating 1h later

[diegorondini]

@laverman Why is this labeled 'wontfix'?

[diegorondini]

@stefbehl can you have a look at this?
We got to more or less the same fix regarding the asciidoctor issue:
Kynetics@c489d80

Also, I seem to remember this doesn't affect just Java 17. Can you have a second look at this patch?

[avgustinmm]

@martinetd,
the hawkbit already uses jdk 17 and it seems there is no problem with building javadoc.
Is the problem, this PR aims to fix, still occurring or we could close the PR as obsolete?

[avgustinmm]

obsolete