Update Gophercloud dependency for reauth problem

Fixes picked up from gophercloud are:
443743e883...0b6b13c4dd

Including the one for endless loop on reauth:
https://github.com/gophercloud/gophercloud/pull/604

vendor/github.com/gophercloud/gophercloud/provider_client.go

@@ -145,10 +145,6 @@ func (client *ProviderClient) Request(method, url string, options *RequestOpts)
 	}
 	req.Header.Set("Accept", applicationJSON)
 
-	for k, v := range client.AuthenticatedHeaders() {
-		req.Header.Add(k, v)
-	}
-
 	// Set the User-Agent header
 	req.Header.Set("User-Agent", client.UserAgent.Join())
 
@@ -162,6 +158,11 @@ func (client *ProviderClient) Request(method, url string, options *RequestOpts)
 		}
 	}
 
+	// get latest token from client
+	for k, v := range client.AuthenticatedHeaders() {
+		req.Header.Set(k, v)
+	}
+
 	// Set connection parameter to close the connection immediately when we've got the response
 	req.Close = true