[ansible] Don't check the hosts key

Author: acs

.github/workflows/create-cluster.yml

@@ -21,4 +21,4 @@ jobs:
           AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
           AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
           NUMBER_OF_NODES: ${{ github.event.inputs.number_nodes }}
-
+          ANSIBLE_HOST_KEY_CHECKING: False