REST API requests not working because of incorrect url

REST API requests not working because of incorrect URL.
Looks like missing trailing slash between endpoint and version. Fast fix is to add trailing slash in designatedashboard/api/rest/passthrough.py line 45:

_get_service_url(request, service) + '/' + url,

Probably this is working if endpoint are set with trailing slash at end.

Error trace:

[21/Oct/2016 08:19:29] "GET /api/dns/v2/zones/ HTTP/1.1" 500 46
HTTP exception with no status/code
Traceback (most recent call last):
  File "/home/martins/Documents/horizon/openstack_dashboard/api/rest/utils.py", line 126, in _wrapped
    data = function(self, request, *args, **kw)
  File "/home/martins/Documents/horizon/.venv/local/lib/python2.7/site-packages/designatedashboard/api/rest/passthrough.py", line 95, in get
    return passthrough_get(path, request).json()
  File "/home/martins/Documents/horizon/.venv/local/lib/python2.7/site-packages/designatedashboard/api/rest/passthrough.py", line 49, in _passthrough_request
    params=params
  File "/home/martins/Documents/horizon/.venv/local/lib/python2.7/site-packages/requests/api.py", line 70, in get
    return request('get', url, params=params, **kwargs)
  File "/home/martins/Documents/horizon/.venv/local/lib/python2.7/site-packages/requests/api.py", line 56, in request
    return session.request(method=method, url=url, **kwargs)
  File "/home/martins/Documents/horizon/.venv/local/lib/python2.7/site-packages/requests/sessions.py", line 461, in request
    prep = self.prepare_request(req)
  File "/home/martins/Documents/horizon/.venv/local/lib/python2.7/site-packages/requests/sessions.py", line 394, in prepare_request
    hooks=merge_hooks(request.hooks, self.hooks),
  File "/home/martins/Documents/horizon/.venv/local/lib/python2.7/site-packages/requests/models.py", line 294, in prepare
    self.prepare_url(url, params)
  File "/home/martins/Documents/horizon/.venv/local/lib/python2.7/site-packages/requests/models.py", line 348, in prepare_url
    raise InvalidURL(*e.args)
InvalidURL: Failed to parse: dns.example.lv:9001v2