find should use portable options
find should use portable options

Change-Id: Iab259abe6758db9001ebafb123c65be870bd6065
Closes-Bug: 1469142

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