[FLINK-16879] [build] Disable the source-release-assembly execution goal

[tzulitai]

We should be using the apache-release build profile defined in the Apache Parent POM, with one exclusion: do not run the source-release-assembly execution goal.

We have our own scripts to create the source release, which correctly excludes binaries from distribution tarball. That script can be found under tools/releasing/create_source_release.sh.

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Verifying

Build the project using mvn clean install -Papache-release.
Under project-root/target/, you should not find any source release packages, only POM files.

[tzulitai]

cc @rmetzger
This fixes the problem you found with RC4 of 2.0.0.

This does not require a cancellation of the current ongoing RC, because the artifacts in the new Maven repository for RC4 is still built with the same commit hash.

[rmetzger]

Thanks a lot for proposing this fix.
I guess we don't have this problem in apache/flink because we are not using the "apache-release" profile for building the releases there?

[tzulitai]

@rmetzger correct, Flink defines its own release profile, but as far as I can tell, it uses essentially the same plugins used as the apache-release profile, minus the source-release-assembly execution.

Stateful Functions' build is relatively simpler, so we decided to just reuse the apache-release profile.

[rmetzger]

Thanks for the quick fix.

[tzulitai]

Thanks for the review, merging this ...