Allow specification of endpoint_type to clients

We currently do not allow operators to specify which endpoint type
needs to be used to reach nova and neutron via their clients. This
adds a new option that defaults to publicURL (as it is today) but
allows operators to specify internalURL or adminURL if they need.

Change-Id: I9432b4df8a5b4fc9f0cc06e6ffb662df634ec4f8
Closes-bug: #1572693

astara/api/__init__.py

@@ -28,5 +28,6 @@ api_opts = [
     cfg.StrOpt('auth_region'),
     cfg.IntOpt('max_retries', default=3),
     cfg.IntOpt('retry_delay', default=1),
+    cfg.StrOpt('endpoint_type', default='publicURL'),
 ]
 CONF.register_opts(api_opts)

astara/api/neutron.py

@@ -791,6 +791,7 @@ class Neutron(object):
         ks_session = keystone.KeystoneSession()
         self.api_client = AstaraExtClientWrapper(
             session=ks_session.session,
+            endpoint_type=cfg.CONF.endpoint_type,
         )
         self.l3_rpc_client = L3PluginApi(PLUGIN_ROUTER_RPC_TOPIC,
                                          cfg.CONF.host)

astara/api/nova.py

@@ -249,7 +249,8 @@ class Nova(object):
         self.client = client.Client(
             version='2',
             session=ks_session.session,
-            region_name=conf.auth_region)
+            region_name=conf.auth_region,
+            endpoint_type=conf.endpoint_type)
 
         try:
             self.instance_provider = get_instance_provider(

astara/test/unit/api/test_nova_wrapper.py

@@ -84,6 +84,7 @@ class FakeConf:
     router_image_uuid = 'astara-image'
     router_instance_flavor = 1
     instance_provider = 'foo'
+    endpoint_type = 'publicURL'
 
 
 EXPECTED_USERDATA = """