Add ability to override MURANO_URL for murano OSC plugin

Partially implements: blueprint openstack-client-plugin-support

Change-Id: I47635ba27cf214b621bbd4756760efb9a3cca997

muranoclient/osc/plugin.py

@@ -35,6 +35,7 @@ def make_client(instance):
               application_catalog_client))
 
     client = application_catalog_client(
+        instance.get_configuration().get('murano_url'),
         region_name=instance._region_name,
         session=instance.session,
         service_type='application-catalog',
@@ -53,4 +54,7 @@ def build_option_parser(parser):
         help=_("Application catalog API version, default={0}"
                "(Env:OS_APPLICATION_CATALOG_API_VERSION)").format(
                    DEFAULT_APPLICATION_CATALOG_API_VERSION))
+    parser.add_argument('--murano-url',
+                        default=utils.env('MURANO_URL'),
+                        help=_('Defaults to env[MURANO_URL].'))
     return parser

muranoclient/tests/unit/osc/test_plugin.py

@@ -27,6 +27,8 @@ class TestApplicationCatalogPlugin(base.TestCaseShell):
         instance.session = 'murano_session'
 
         plugin.make_client(instance)
-        p_client.assert_called_with(region_name='murano_region',
-                                    session='murano_session',
-                                    service_type='application-catalog')
+        p_client.assert_called_with(
+            mock.ANY,
+            region_name='murano_region',
+            session='murano_session',
+            service_type='application-catalog')

releasenotes/notes/osc-murano-url-507932234b49cf9f.yaml

@@ -0,0 +1,3 @@
+---
+features:
+  - OSC plugin now honores ``--murano-url`` and ``MURANO_URL``, to allow using custom murano endpoint