Cosmetic change to cleanup output
Cosmetic change to cleanup output

Cleanup failures turned out to be a pretty common thing since there may be
dozens of different cloud configurations and it is not trivial to implement
a single cleanup strategy that would work for all of them. This patch makes
the log output in case of a cleanup failure somewhat less affright.

Change-Id: Ibff9edaada9b8a6d69575d6702ab6ea4f2192f8a
Related-Bug: #1260059

afaheem88/rally,vponomaryov/rally,vganapath/rally,aforalee/RRally,group-policy/rally,vganapath/rally,eonpatapon/rally,shdowofdeath/rally,openstack/rally,redhat-openstack/rally,ytsarev/rally,amit0701/rally,eayunstack/rally,eayunstack/rally,aplanas/rally,pyKun/rally,varunarya10/rally,gluke77/rally,amit0701/rally,eonpatapon/rally,eayunstack/rally,pandeyop/rally,vefimova/rally,cernops/rally,vganapath/rally,openstack/rally,shdowofdeath/rally,aforalee/RRally,yeming233/rally,paboldin/rally,openstack/rally,vefimova/rally,gluke77/rally,cernops/rally,afaheem88/rally,gluke77/rally,group-policy/rally,redhat-openstack/rally,amit0701/rally,paboldin/rally,paboldin/rally,vganapath/rally,go-bears/rally,go-bears/rally,aplanas/rally,gluke77/rally,pandeyop/rally,pyKun/rally,ytsarev/rally,openstack/rally,group-policy/rally,yeming233/rally,varunarya10/rally,vponomaryov/rally