Add all regions to cloud configuration

OCC now requires all regions to be listed in the cloud
configuration. Update the shell unit tests to list all
of the regions being tested.

Change-Id: Ic7300d1f708339701b5daadbf2c4769b239a2adb
Closes-Bug: #1528926

Author: rtheis

openstackclient/tests/test_shell.py

@@ -76,7 +76,7 @@
                 'project_name': 'heart-o-gold',
                 'username': 'zaphod',
             },
-            'region_name': 'occ-cloud',
+            'region_name': 'occ-cloud,krikkit,occ-env',
             'log_file': '/tmp/test_log_file',
             'log_level': 'debug',
         }