🐛 fix kcp adoption template azure.json secret key

Author: Cecile Robert-Michon

test/e2e/data/infrastructure-azure/cluster-template-kcp-adoption.yaml

@@ -148,7 +148,7 @@ spec:
   files:
     - contentFrom:
         secret:
-          key: azure.json
+          key: control-plane-azure.json
           name: ${CLUSTER_NAME}-control-plane-0-azure-json
       owner: root:root
       path: /etc/kubernetes/azure.json
@@ -236,7 +236,7 @@ spec:
     files:
     - contentFrom:
         secret:
-          key: azure.json
+          key: control-plane-azure.json
           name: ${CLUSTER_NAME}-control-plane-0-azure-json
       owner: root:root
       path: /etc/kubernetes/azure.json