Add experimental config options

templates/config.yaml

@@ -14,6 +14,11 @@ matrix:
   secret: "{{ matrix_authentication_service_homeserver_secret }}"
   endpoint: "{{ matrix_authentication_service_homeserver_endpoint }}"
 
+{% if matrix_authentication_service_config_experimental | default({}) | length > 0 %}
+experimental:
+{{ matrix_authentication_service_config_experimental | to_nice_yaml | indent(2, true) }}
+{% endif %}
+
 http:
   public_base: "{{ matrix_authentication_service_http_public_base }}"
   issuer: "{{ matrix_authentication_service_http_public_base }}"