opnfv doctor: keystoneauth1.exceptions.http.NotFound: The resource could not be found. (HTTP 404)

[Manik Bindlish]

Code checkout from:
git clone https://gerrit.opnfv.org/gerrit/doctor -b stable/danube

Command executed:
python inspector.py $INSPECTOR_PORT

Problem:
keystoneauth1.exceptions.http.NotFound: (http://<IP>/identity/tokens): The resource could not be found. (HTTP 404)

Problem seems in identity_auth.py

[Manik Bindlish (manikbindlish19)]

/usr/local/lib/python2.7/dist-packages/novaclient/client.py:268: UserWarning: The 'connection_pool' argument is deprecated in Ocata and its use may result in errors in future releases.
  warnings.warn(msg)
Traceback (most recent call last):
  File "inspector.py", line 95, in <module>
    inspector = DoctorInspectorSample()
  File "inspector.py", line 62, in __init__
    self.nova.servers.list(detailed=False)
  File "/usr/local/lib/python2.7/dist-packages/novaclient/v2/servers.py", line 872, in list
    "servers")
  File "/usr/local/lib/python2.7/dist-packages/novaclient/base.py", line 254, in _list
    resp, body = self.api.client.get(url)
  File "/usr/local/lib/python2.7/dist-packages/keystoneauth1/adapter.py", line 223, in get
    return self.request(url, 'GET', **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/novaclient/client.py", line 78, in request
    **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/keystoneauth1/adapter.py", line 382, in request
    resp = super(LegacyJsonAdapter, self).request(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/keystoneauth1/adapter.py", line 148, in request
    return self.session.request(url, method, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/positional/__init__.py", line 101, in inner
    return wrapped(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/keystoneauth1/session.py", line 491, in request
    auth_headers = self.get_auth_headers(auth)
  File "/usr/local/lib/python2.7/dist-packages/keystoneauth1/session.py", line 818, in get_auth_headers
    return auth.get_headers(self, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/keystoneauth1/plugin.py", line 90, in get_headers
    token = self.get_token(session)
  File "/usr/local/lib/python2.7/dist-packages/keystoneauth1/identity/base.py", line 90, in get_token
    return self.get_access(session).auth_token
  File "/usr/local/lib/python2.7/dist-packages/keystoneauth1/identity/base.py", line 136, in get_access
    self.auth_ref = self.get_auth_ref(session)
  File "/usr/local/lib/python2.7/dist-packages/keystoneauth1/identity/v2.py", line 65, in get_auth_ref
    authenticated=False, log=False)
  File "/usr/local/lib/python2.7/dist-packages/keystoneauth1/session.py", line 766, in post
    return self.request(url, 'POST', **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/positional/__init__.py", line 101, in inner
    return wrapped(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/keystoneauth1/session.py", line 655, in request
    raise exceptions.from_response(resp, method, url)