qa/022: better diagnostics for test failure scenarios
qa/022: better diagnostics for test failure scenarios

This one has become unreliable ... trying to track down
non-deterministic failures that seem related to
    Cannot connect to PMCD on host "unix:"
for some reason.

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