Add tracking of the kind of temporary access tokens, so we can display if a pull/push by token is for a build worker

endpoints/trackhelper.py

@@ -34,6 +34,10 @@ def track_and_log(event_name, repo, **kwargs):
   elif authenticated_token:
     metadata['token'] = authenticated_token.friendly_name
     metadata['token_code'] = authenticated_token.code
+
+    if authenticated_token.kind:
+      metadata['token_type'] = authenticated_token.kind.name
+
     analytics_id = 'token:' + authenticated_token.code
   else:
     metadata['public'] = True