Adding ability to specify overrides back into keycloak configuration

See the docs on keycloak.md that specifify how this can be done.

qhub/deploy.py

@@ -7,6 +7,7 @@
 from subprocess import CalledProcessError
 from typing import Dict
 import tempfile
+import json
 
 from qhub.provider import terraform
 from qhub.utils import (
@@ -540,6 +541,9 @@ def provision_05_kubernetes_keycloak(stage_outputs, config, check=True):
             "initial-root-password": config["security"]["keycloak"][
                 "initial_root_password"
             ],
+            "overrides": [
+                json.dumps(config['security']['keycloak'].get("overrides", {}))
+            ],
             "node-group": calculate_note_groups(config)["general"],
         },
     )