Add service catalog get for keystone REST API

This adds full access to the keystone service catalog for the user.

The service catalog can be used to determine whether or not
Neutron or Nova networking is enabled. This is needed in
launch instance.

Change-Id: I9e19563b0d9b8d106274d6806b302eb01bb51915
Partially Implements: blueprint launch-instance-redesign

horizon/static/horizon/js/angular/services/hz.api.keystone.js

@@ -200,6 +200,13 @@ limitations under the License.
           horizon.alert('error', gettext('Unable to grant the role.'));
         });
     };
+
+    this.serviceCatalog = function() {
+      return apiService.get('/api/keystone/svc-catalog/')
+        .error(function () {
+          horizon.alert('error', gettext('Unable to fetch the service catalog.'));
+        });
+    };
   }
 
   angular.module('hz.api')

openstack_dashboard/api/rest/keystone.py

@@ -487,3 +487,15 @@ class ProjectRole(generic.View):
             user_id,
             role_id
         )
+
+
+@urls.register
+class ServiceCatalog(generic.View):
+    url_regex = r'keystone/svc-catalog/$'
+
+    @rest_utils.ajax()
+    def get(self, request):
+        """Return the Keystone service catalog associated with the current
+        user.
+        """
+        return request.user.service_catalog

openstack_dashboard/test/api_tests/keystone_rest_tests.py

@@ -16,6 +16,8 @@ import testtools
 
 from django.conf import settings
 
+from oslo_serialization import jsonutils
+
 from openstack_dashboard.api.rest import keystone
 
 from rest_test_utils import construct_request   # noqa
@@ -529,3 +531,15 @@ class KeystoneRestTestCase(testtools.TestCase):
                                                  description=None,
                                                  domain='domain123',
                                                  enabled=None)
+
+    #
+    # Service Catalog
+    #
+    @mock.patch.object(keystone.api, 'keystone')
+    def test_service_catalog_get(self, kc):
+        request = construct_request()
+        response = keystone.ServiceCatalog().get(request)
+        self.assertStatusCode(response, 200)
+        content = jsonutils.dumps(request.user.service_catalog,
+                                  sort_keys=settings.DEBUG)
+        self.assertEqual(content, response.content)