Moved metric user and password configuration to metrics plugin

amarillo/services/secrets.py

@@ -1,13 +1,9 @@
-from typing import Dict
-from pydantic import Field
+from pydantic import Field, ConfigDict
 from pydantic_settings import BaseSettings
-from typing import Optional
 # Example: secrets = { "mfdz": "some secret" }
 class Secrets(BaseSettings):
+    model_config = ConfigDict(extra='allow')
     ride2go_token: str = Field(None, env = 'RIDE2GO_TOKEN')
-    # TODO: define these as required if metrics plugin is installed
-    metrics_user: Optional[str] = Field(None, env = 'METRICS_USER')
-    metrics_password: Optional[str] = Field(None, env = 'METRICS_PASSWORD')
 
 
 # Read if file exists, otherwise no error (it's in .gitignore)