Discover snapshots get error:
2018-11-17 11:13:03|||||newton_base.registration.registration||140560366311232||get_list_resources||INFO||making request with URI:/snapshots/detail,{'service_type': 'volumev3', 'interface': 'public', 'region_name': u'RegionOne'}||||requestID=766690fd-ccb8-3135-82b2-678e9825c2ba invocationID=d77a37ec-c368-4127-af2f-5307cf42f3e3 serviceName=multicloud-titaniumcloud serviceIP=10.42.191.7 2018-11-17 11:13:03|||||newton_base.registration.registration||140560366311232||_get_list_resources||INFO||making request with URI:/snapshots/detail,{'service_type': 'volumev3', 'interface': 'public', 'region_name': u'RegionOne'}||||requestID=766690fd-ccb8-3135-82b2-678e9825c2ba invocationID=d77a37ec-c368-4127-af2f-5307cf42f3e3 serviceName=multicloud-titaniumcloud serviceIP=10.42.191.7 2018-11-17 11:13:03|||||newton_base.registration.registration||140560366311232||_discover_snapshots||ERROR||Traceback (most recent call last):  File "/opt/windriver/lib/share/newton_base/registration/registration.py", line 742, in _discover_snapshots    "snapshots"):  File "/opt/windriver/lib/share/newton_base/registration/registration.py", line 55, in _get_list_resources    resp = session.get(resource_url, endpoint_filter=service)  File "/usr/local/lib/python2.7/site-packages/keystoneauth1/session.py", line 758, in get    return self.request(url, 'GET', *kwargs)  File "/usr/local/lib/python2.7/site-packages/positional/init_.py", line 108, in inner    return wrapped(*args, **kwargs)  File "/usr/local/lib/python2.7/site-packages/keystoneauth1/session.py", line 616, in request    resp = send(*kwargs)  File "/usr/local/lib/python2.7/site-packages/keystoneauth1/session.py", line 690, in _send_request    raise exceptions.ConnectFailure(msg)ConnectFailure: Unable to establish connection to http://127.0.0.1:8776/v3/c27a17a7b4744314949b6a2234dc7369/snapshots/detail: HTTPConnectionPool(host='127.0.0.1', port=8776): Max retries exceeded with url: /v3/c27a17a7b4744314949b6a2234dc7369/snapshots/detail (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7fd6b5160b90>: Failed to establish a new connection: [Errno 111] Connection refused',))