Update OCP 4.16 to latest stable version

Author: olliewalsh

ansible/vars/default.yaml

@@ -41,7 +41,7 @@ podman_insecure_registries:
 # To set a specific release to install.
 # TODO: support "latest"/"stable" e.g https://mirror.openshift.com/pub/openshift-v4/clients/ocp/stable-4.14/
 ocp_version: "4.16"
-ocp_minor_version: 37
+ocp_minor_version: 40
 ocp_release_image: "quay.io/openshift-release-dev/ocp-release:{{ ocp_version }}.{{ ocp_minor_version }}-x86_64"
 ocp_release_data_url: "https://mirror.openshift.com/pub/openshift-v4/clients/ocp/{{ ocp_version }}.{{ ocp_minor_version }}/release.txt"
 ocp_release_type: ga