qa/243: need slightly longer delay for second pmcd
qa/243: need slightly longer delay for second pmcd

When testing "socket in use" errors, we need to wait a bit longer
for the EADDRINUSE retry loops in libpcp.

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