Add missing tests for rally/benchmark/scenarios/nova/utils.py
Add missing tests for rally/benchmark/scenarios/nova/utils.py

Change-Id: I4949e1b7e17e86cfacd8b360cfdef64a0babfe08

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