test: retry in schema forwarding test when changing compatibility

tests/integration/test_master_coordinator.py

@@ -210,7 +210,9 @@ async def test_schema_request_forwarding(registry_async_pair):
             path = "config"
         for compat in ["FULL", "BACKWARD", "FORWARD", "NONE"]:
             resp = requests.put(f"{slave_url}/{path}", json={"compatibility": compat})
-            assert resp.ok
+            if not resp.ok:
+                # Allow retry if response is not ok.
+                continue
             while True:
                 assert counter < max_tries, "Compat update not propagated"
                 resp = requests.get(f"{master_url}/{path}")