[BUG] published rapids-4-spark dist artifact references aggregator

[gerashegalov]

Describe the bug

Originally reported by @NvTimLiu

Previously we relied on the shade plugin to get rid of transitive dependencies in dist/pom.xml. In 21.10 we pushed it into aggregator because this is the last stage with the conventional jar layout. The consequence is that we have the reduced dependency pom only at the aggregator level whereas we still retain a dangling reference to the aggregator pom itself in the dist jar.

Steps/Code to reproduce bug
./build/buildall -p=320

Expected behavior
No dependency pom should be published.

We could generate stage a reduced dependency pom just like the shad plugin "manually"

Environment details (please complete the following information)
dev/ci

Additional context
#3223

[jlowe]

Is this a duplicate of #3927?

[gerashegalov]

Is this a duplicate of #3927?

Maybe. However, we could actually use #3927 for potentially adding the workaround -Dtransitive=true https://maven.apache.org/plugins/maven-dependency-plugin/get-mojo.html

and this one for the root cause fix

[NvTimLiu]

Close the issue per #3930 merged