qa/common.filter: more tweaks for _filter_pcp_start()
qa/common.filter: more tweaks for _filter_pcp_start()

On grundy I've started to see "..done" being appended to the
Starting pmcd ... and Starting pmlogger ... lines.
Remove "..done" in the filter.

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