Update signature for bug 1331274

Bug 1331274: Logs are not getting created for services in Grenade

Related bug, 1334548: Grenade test times out with "Failure in
upgrade-ceilometer" (from grenade.sh.txt)

Change-Id: I2a92bb61bbfe1380a9d27907c49814541e264433
Merge "Update signature for bug 1331274"