QA test 519 intermittent failure fixed.
QA test 519 intermittent failure fixed.

This test intermittently fails when the two hosts chosen do not
have filesystems that are less than 50% full - dumb assumption,
and has nothing to do with what the test is actually trying to
achieve.  Changed this to more than 0% full, which makes for a
deterministic test.  Also made the syslog path search consistent
with the other syslog test (583).

tjanez/pcp,wuliming/pcp,andyvand/cygpcpfans,andyvand/cygpcpfans,wuliming/pcp,edwardt/pcp,mbaldessari/pcp,mbaldessari/pcp,edwardt/pcp,aeg-aeg/pcpfans,ryandoyle/pcp_original,adfernandes/pcp,adfernandes/pcp,edwardt/pcp,tjanez/pcp,prasincs/pcp,edwardt/pcp,prasincs/pcp,edwardt/pcp,adfernandes/pcp,aeg-aeg/pcpfans,ryandoyle/pcp_original,andyvand/cygpcpfans,tjanez/pcp,andyvand/cygpcpfans,mbaldessari/pcp,prasincs/pcp,wuliming/pcp,edwardt/pcp,aeg-aeg/pcpfans,prasincs/pcp,prasincs/pcp,tjanez/pcp,prasincs/pcp,wuliming/pcp,mbaldessari/pcp,andyvand/cygpcpfans,prasincs/pcp,aeg-aeg/pcpfans,adfernandes/pcp,ryandoyle/pcp_original,mbaldessari/pcp,wuliming/pcp,wuliming/pcp,wuliming/pcp,ryandoyle/pcp_original,aeg-aeg/pcpfans,tjanez/pcp,adfernandes/pcp,tjanez/pcp,adfernandes/pcp,prasincs/pcp,mbaldessari/pcp,edwardt/pcp,ryandoyle/pcp_original,tjanez/pcp,adfernandes/pcp,tjanez/pcp,aeg-aeg/pcpfans,ryandoyle/pcp_original,aeg-aeg/pcpfans,andyvand/cygpcpfans,adfernandes/pcp,ryandoyle/pcp_original,edwardt/pcp,andyvand/cygpcpfans,ryandoyle/pcp_original,aeg-aeg/pcpfans,wuliming/pcp,andyvand/cygpcpfans