Fixed infinite loop polling for ip address.
Fixed infinite loop polling for ip address.

openstack/trove,denismakogon/trove-guestagent,mmasaki/trove,zhangg/trove,hplustree/trove,hplustree/trove,citrix-openstack/build-trove,cp16net/trove,fabian4/trove,denismakogon/trove-guestagent,zhujzhuo/openstack-trove,mmasaki/trove,changsimon/trove,zhangg/trove,cp16net/trove,changsimon/trove,openstack/trove,zhujzhuo/openstack-trove,cp16net/trove,citrix-openstack-build/trove,citrix-openstack-build/trove,redhat-openstack/trove,changsimon/trove,zhujzhuo/openstack-trove,fabian4/trove,mmasaki/trove,fabian4/trove,citrix-openstack/build-trove,citrix-openstack/build-trove,redhat-openstack/trove,redhat-openstack/trove,citrix-openstack-build/trove