JSR 305 annotations Maven artifact with ID :jsr305 duplicates classes in artifact with ID :annotations

In order to be able to run https://github.com/basepom/duplicate-finder-maven-plugin, motivated by ODLPARENT-59 I'll have to replace all uses of com.google.code.findbugs:jsr305 by com.google.code.findbugs:jsr305 by annotations, to avoid duplicate classpath entries.

see also https://git.opendaylight.org/gerrit/#/c/47337/

once that's done, we can (and should, will) forbid use of jsr305 via a new maven-enforcer-plugin rule, similar to https://git.opendaylight.org/gerrit/#/c/50844/