Comment 0 for bug 1348064

The function get_secgroup_uuids() in neutron.py will raise the exception.PhysicalResourceNameAmbiguity if there are several securityGroup have the same name, for admin, who can get the other user's securityGroup, so we should select the group with the name which belongs to himself first, if not_existent then to raise the exception.PhysicalResourceNameAmbiguity.