qa/group: put back entries for some retired tests
qa/group: put back entries for some retired tests

Commit e32ec766 removed a bunch of tests for pmcollect.

The preferred way of handling this in the group file is to mark the
tests with the :retired tag ... they will not be run, but this prevents
the test number being reassigned for something totally different, which
can be confusing, especially when inspecting the git log or reviewing
the history of test pass/failure.

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp