Modify _verify_response to validate response codes.

The method will now take a response code as an additional
parameter and will validate it against the actual one.
Fixes bug 1156684

Change-Id: Idba3f54ed50b359d9230707fb45e7c5ea68e6b7d
Fix SecurityGroups XML sample tests

Fixes bug 1157521

Change-Id: I38ad52e0720feea37e8dbda8ad9c29162842c8f1
Resolve conflicting mac address in resize

This patch fixes bug 1161226 and mac address conflicts when migrating or
resizing an instance using the PowerVM driver. This will ensure that if
a migration or resize is taking place on the same host, a temporary mac
address will be assigned to the original LPAR so there is no conflict on
the VIOS when a second LPAR is started with the same address.

Change-Id: I59db484defb789f3a7c0eddbd5ef9e92efc22419
Merge "Modify _verify_response to validate response codes."
Merge "Fix SecurityGroups XML sample tests"
Merge "Resolve conflicting mac address in resize"