qa/326: filter out "Failed to create avahi client" messages from pmcd
qa/326: filter out "Failed to create avahi client" messages from pmcd

Only happens on systems with half-baked avahi support, like my
FreeBSD systems where I've not yet figured how to enable avahi
properly.

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