* Added "AuthorizationFailure" to the recoverable errors list
since keystoneclient raises it anytime it can't talk to
keystone. Fixes bug 971249.
* Used proper exception handling for the users index view.
Fixed some tests that had been failiing but masked previously.
Fixes bug 971250.
Change-Id: Iec8c1fc7bf8585a529fa15af55f807abc0f84d42