Add extra refs

Author: willie-yao

config/jobs/kubernetes-sigs/cluster-api-provider-azure/cluster-api-provider-azure-presubmits-main.yaml

@@ -332,6 +332,11 @@ presubmits:
       preset-azure-community: "true"
     branches:
     - ^main$
+    extra_refs:
+    - org: kubernetes-sigs
+      repo: cloud-provider-azure
+      base_ref: master
+      path_alias: sigs.k8s.io/cloud-provider-azure
     spec:
       serviceAccountName: azure
       containers: