Add daemon-selected container monitor delegation

tests/test-proxy-protocol.sh

@@ -150,6 +150,13 @@ with conn:
         elif mode == "bad_rc":
             response["result"]["ha"]["ocf_rc"] = 42
 
+        elif mode == "delegate":
+            response["result"] = {
+                "delegated": True,
+                "backend": "container",
+                "container_runtime": "podman",
+            }
+
     conn.sendall(
         json.dumps(response).encode("utf-8") + b"\n"
     )
@@ -248,6 +255,7 @@ PY_REFUSED
 echo "===== PROXY PROTOCOL CLASSIFICATION ====="
 
 run_case valid             valid             0
+run_case delegation        delegate          0
 run_case missing_protocol  missing_protocol  11
 run_case wrong_protocol    wrong_protocol    11
 run_case wrong_resource    wrong_resource    11