Correct the fake implementation of UsageVerifier

* rename clear_event to clear_events

Fixes: Bug #1234739
Change-Id: Ia3e2e9ecc85c49321793a098f272982bffc2230c
Adding location attribute to Fake Backup object.

Fixes: Bug #1234869

Change-Id: If564f0c061dffe31da7476a35f90cac20d6c612e
Add tenant id to guest_info file

Fixes bug 1235039

Change-Id: I358fe58bbe343cdf65b18b391196d36d4647b35e
Merge "Correct the fake implementation of UsageVerifier"
Merge "Adding location attribute to Fake Backup object."