fix Bug#967807 file inject to sustain permission on file-update
fix Bug#967807 file inject to sustain permission on file-update

rackerlabs/openstack-guest-agents-unix,joejulian/openstack-guest-agents-unix,rackerlabs/openstack-guest-agents-unix,joejulian/openstack-guest-agents-unix,rackerlabs/openstack-guest-agents-unix,joejulian/openstack-guest-agents-unix