Update affected test and add a new test for ex_list_availability_zones.
Update affected test and add a new test for ex_list_availability_zones.

Submitted By: Tomaž Muraus <tomaz@cloudkick.com>


git-svn-id: 353d90d4d8d13dcb4e0402680a9155a727f61a5a@1056501 13f79535-47bb-0310-9956-ffa450edef68

cloudkick/libcloud,cloudkick/libcloud