Use configured endpoint instead of hardcoded ones

Usage of public endpoints was hardcoded
- for the Heat client
- in a test for the Zaqar client
- when checking if a service is available

A test also required Heat to be configured to use public endpoints when
talking to services. This test is more relaxed now.

Change-Id: I3784e126d28a51d990702e1b9e6bf23f0447fa21

heat_tempest_plugin/common/test.py

@@ -257,7 +257,7 @@ class HeatIntegrationTest(testtools.testcase.WithAttributes,
     def is_service_available(self, service_type):
         try:
             self.identity_client.get_endpoint_url(
-                service_type, self.conf.region)
+                service_type, self.conf.region, self.conf.endpoint_type)
         except kc_exceptions.EndpointNotFound:
             return False
         else:

heat_tempest_plugin/services/clients.py

@@ -111,7 +111,7 @@ class ClientManager(object):
             self.HEATCLIENT_VERSION,
             endpoint,
             session=session,
-            endpoint_type='publicURL',
+            endpoint_type=self.conf.endpoint_type,
             service_type='orchestration',
             region_name=self.conf.region,
             username=self._username(),

heat_tempest_plugin/tests/functional/test_remote_stack.py

@@ -94,9 +94,10 @@ outputs:
         ex = self.assertRaises(exc.HTTPBadRequest, self.stack_create, **kwargs)
 
         error_msg = ('ERROR: Cannot establish connection to Heat endpoint '
-                     'at region "DARKHOLE" due to "publicURL endpoint for '
+                     'at region "DARKHOLE" due to '
+                     '"(?:public|internal|admin)(?:URL)? endpoint for '
                      'orchestration service in DARKHOLE region not found"')
-        self.assertEqual(error_msg, six.text_type(ex))
+        self.assertRegex(six.text_type(ex), error_msg)
 
     @decorators.idempotent_id('b2190dfc-d223-4595-b168-6c42b0f3a3e5')
     def test_stack_resource_validation_fail(self):

heat_tempest_plugin/tests/functional/test_waitcondition.py

@@ -54,7 +54,7 @@ outputs:
             password=signal['password'],
             project_id=signal['project_id'])
         endpoint = ks.service_catalog.url_for(
-            service_type='messaging', endpoint_type='publicURL')
+            service_type='messaging', endpoint_type=self.conf.endpoint_type)
         conf = {
             'auth_opts': {
                 'backend': 'keystone',