Use same environment for Neutron calls

We need to use the same environment (with the token, etc.) for making
the neutron calls, instead of just trying to obtain the token from the
headers (whose key lookup in the dictionary, by the way, was wrong). We
need to remove some keys from the environ, so that the new request is
created properly.

Change-Id: I86bedab940449a07780e288c03d4de789b8e695a

ooi/api/helpers.py

@@ -146,16 +146,16 @@ class BaseHelper(object):
         if hasattr(self, 'neutron_endpoint'):
             server = self.neutron_endpoint
             environ = copy.copy(req.environ)
-            try:
-                if "HTTP_X-Auth-Token" not in environ:
-                    env_token = req.environ["keystone.token_auth"]
-                    token = env_token.get_auth_ref(None)['auth_token']
-                    environ = {"HTTP_X-Auth-Token": token}
-            except Exception:
-                raise webob.exc.HTTPUnauthorized
+            # NOTE(aloga): remove things from environment that will cause the
+            # resquest not to be build properly, see
+            # https://github.com/Pylons/webob/blob/master/src/webob/request.py
+            for k in ("PATH_INFO", "SCRIPT_NAME", "SERVER_NAME", "SERVER_PORT",
+                      "HTTP_HOST"):
+                environ.pop(k, None)
 
             new_req = webob.Request.blank(path=path,
-                                          environ=environ, base_url=server)
+                                          environ=environ,
+                                          base_url=server)
         else:
             new_req = webob.Request(copy.copy(req.environ))
             new_req.script_name = self.openstack_version