fix parsing keycloak config and error printing

h5pyd/_apps/config.py

@@ -45,6 +45,9 @@
         "help": "storage Bucket to use (S3 Bucket, Azure Container, or top-level directory)",
         "choices": ["BUCKET",]
     },
+    "hs_keycloak_client_id": {},
+    "hs_keycloak_realm": {},
+    "hs_keycloak_uri": {},
 
     "loglevel": {
         "default": "error",
@@ -128,7 +131,7 @@ def __init__(self, config_file=None, custom_entries=[], **kwargs):
                     k = fields[0].strip()
                     v = fields[1].strip()
                     if k not in self._names:
-                        raise ValueError(f"undefined option: {name}")
+                        raise ValueError(f"undefined option: {k}")
                     if k in self._choices:
                         choices = self._choices[k]
                         if len(choices) > 1 and v not in self._choices: