qa/662: make -l early in options to pmwebd
qa/662: make -l early in options to pmwebd

If pmwebd fails to start (not related to this test, but something
else), then the messages appear to be written to tty.  Hoping that
moving -l earlier in the command line will get logfile set before
pmwebd runs into any badness.

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