Anything that needs a service catalog can get it directly from
auth_ref.service_catalog, no need to carry the extra attribute.

ClientManager.get_endpoint_for_service_type() reamins the proper
method to get an endpoint for clients that still need one directly.

Change-Id: I809091c9c71d08f29606d7fd8b500898ff2cb8ae

Clients that can use ksc Session don't need the old junk to
fake auth anymore:
* compute
* volume

Clients that still need to be fed credentials can pick directly
from the auth object in clientmanager.  The _token attribute is
removed, the token can be retrieved from the auth object:

  openstackclient/tests/common/test_clientmanager.py

This change will break any plugin that relies on getting a token
from instance._token. They should be updated to use the above, or
preferable, to use keystoneclient.session.Session to create its
HTTP interface object.

Change-Id: I877a29de97a42f85f12a14c274fc003e6fba5135

In a cloud with AZs, you can get multiple entries back from the service
catalog - one for each AZ and then one that is AZ agnostic that's tied
to the region. If the region_name is plumbed all the way through, this
works as intended.

Change-Id: I3b365ea306e8111fc80830672ae8080a5d1dc8e0

Instead of inline messages, let's create variables instead, as
it's easier to find strings, and mark them for translation.

Change-Id: Ibbcfdbc59d12a0cb4af50f73043d3ff7f3c76f99

Use --enable and --disable vs --admin-state-up/--admin-state-down

Change-Id: I90040b925cb537a8ba13d1dd609c51bb669cf149

Add help text for network delete, network set and network show

Change-Id: I80ad5eae35f0eba2bfe19e06786c9b8ed1522046
Closes-Bug: #1343659

Change-Id: I0b6760a6401b50e3dfb891af75424ae89df42ebc