Update expected result after changing manifest

operator/tests/test_external_configmap_data_default_cluster.py

@@ -83,7 +83,7 @@ def test_use_external_config_map_data(netchecks, k8s_namespace, test_file_path):
         # Test data should be a string containing JSON returned by the server which should include the header
         # we injected from the configmap
         data = json.loads(test_data["body"])
-        assert data["headers"]["X-Netcheck-Header"] == "some-data-from-a-configmap"
+        assert data["headers"]["X-Netcheck-Header"] == "some-data-from-a-configmap!"
 
     # Delete the network assertion
     subprocess.run(