Remove another private OSC attribute usage

tripleoclient WebsocketClient used a private auth attribute. This
switches it to a more public api.

Change-Id: Ib6a3ad21b9d770dad943b6e567cfbea8402cc84f
Closes-Bug: #1605876

tripleoclient/plugin.py

@@ -21,7 +21,6 @@ import uuid
 import websocket
 
 from openstackclient.common import utils
-from openstackclient.identity import common as identity_common
 
 LOG = logging.getLogger(__name__)
 
@@ -74,9 +73,7 @@ class WebsocketClient(object):
             'messaging')
         token = instance.auth.get_token(instance.session)
 
-        self._project_id = identity_common.find_project(
-            instance.identity,
-            instance._project_name).id
+        self._project_id = instance.auth_ref.project_id
 
         self._websocket_client_id = str(uuid.uuid4())
 

tripleoclient/tests/test_plugin.py

@@ -25,11 +25,10 @@ class TestPlugin(base.TestCase):
     @mock.patch("websocket.create_connection")
     def test_make_client(self, ws_create_connection):
         clientmgr = mock.MagicMock()
-        clientmgr._api_version.__getitem__.return_value = '1'
         clientmgr.get_endpoint_for_service_type.return_value = fakes.AUTH_URL
 
         clientmgr.auth.get_token.return_value = "TOKEN"
-        clientmgr.identity.projects.get.return_value = mock.MagicMock(id="ID")
+        clientmgr.auth_ref.project_id = "ID"
         ws_create_connection.return_value.recv.return_value = json.dumps({
             "headers": {
                 "status": 200
@@ -71,10 +70,9 @@ class TestPlugin(base.TestCase):
         }, send_ack]
 
         clientmgr = mock.MagicMock()
-        clientmgr._api_version.__getitem__.return_value = '1'
         clientmgr.get_endpoint_for_service_type.return_value = fakes.AUTH_URL
         clientmgr.auth.get_token.return_value = "TOKEN"
-        clientmgr.identity.projects.get.return_value = mock.MagicMock(id="ID")
+        clientmgr.auth_ref.project_id = "ID"
 
         client = plugin.make_client(clientmgr)