handle missing key in base config

Author: mplsgrant

src/warnet/users.py

@@ -41,7 +41,7 @@ def auth(auth_config):
     if not is_first_config:
         for category in ["clusters", "users", "contexts"]:
             if category in auth_config:
-                if not base_config[category]:
+                if category in base_config and not base_config[category]:
                     base_config[category] = []
                 merge_entries(category, base_config, auth_config)