Adding location attribute to Fake Backup object.
Adding location attribute to Fake Backup object.

Fixes: Bug #1234869

Change-Id: If564f0c061dffe31da7476a35f90cac20d6c612e

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