Create backup first if injected file already exists
Create backup first if injected file already exists

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