Minor test code change to GuestAgent

Change-Id: I0d0f3eeb0f249ff15ae382e1f3cce4b657c1c776
Fix Restore Unit Tests

Change-Id: I3a2c415a678b7a24a932389a84abcf794111c4b1
Added Restore Location to GuestAgent

Change-Id: Icab3eea85abc11b13a96046ea594e4396c8399b9