qa/1199: relax memory "leak" condition
qa/1199: relax memory "leak" condition

On a couple of VMs this test was failing with a 80-92 Kbyte "leak"
which can be explained by deferred memory allocation during the early
life of pmcd and the associated DSO PMDAs.

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