single-feature-parent should verify compiled feature does not refer to bundles from other ODL projects

As Robert says [0], every bundle should be packaged in its project ONLY.

This improvement (adding test that fail if generated feature refers to org.opendaylight bundle not from org.opendaylight.

) would help ensuring that.
Specifically it would ensure the second part of:
"At the end of the day, every ODL jar file should be part of EXACTLY ONE
feature and that feature MUST reside in the same project as the source
code used to build that jar."

Also, there should be a test for feature-repo-parent ensuring the generated descriptor contains no bundles (or configfiles), just features.

[0] https://lists.opendaylight.org/pipermail/release/2017-September/012356.html