Change k8s-keystone-auth docker repo

Reverts the change in https://review.opendev.org/#/c/643225/22 (line 9).
This allows users to deploy clusters with all released versions of
cloud-provider-openstack. The openstackmagnum repo only has v1.14.0

Also updates the docs with the default value for the Train/Ussuri release.

Updates the default tag to v1.15.0 for Ussuri.

Story: 2006967
Change-Id: Icf6f9f3c02d6b211c4dc3c1d654c8d8573443e0f

doc/source/user/index.rst

@@ -392,7 +392,7 @@ the table are linked to more details elsewhere in the user guide.
 | `service_cluster_ip_range`            | IPv4 CIDR for k8s  | 10.254.0.0/16 |
 |                                       | service portals    |               |
 +---------------------------------------+--------------------+---------------+
-| `keystone_auth_enabled`_              | see below          | false         |
+| `keystone_auth_enabled`_              | see below          | true          |
 +---------------------------------------+--------------------+---------------+
 | `k8s_keystone_auth_tag`_              | see below          | see below     |
 +---------------------------------------+--------------------+---------------+
@@ -1163,6 +1163,7 @@ _`container_infra_prefix`
   * docker.io/openstackmagnum/kubernetes-kubelet
   * docker.io/openstackmagnum/kubernetes-proxy
   * docker.io/openstackmagnum/kubernetes-scheduler
+  * docker.io/k8scloudprovider/k8s-keystone-auth
   * gcr.io/google_containers/pause:3.0
 
   Images that might be needed:
@@ -1302,7 +1303,9 @@ _`k8s_keystone_auth_tag`
   This label allows users to select `a specific k8s_keystone_auth
   version, based on its container tag
   <https://hub.docker.com/r/k8scloudprovider/k8s-keystone-auth/tags/>`_.
-  Stein-default: 1.13.0
+  Stein-default: v1.13.0
+  Train-default: v1.14.0
+  Ussuri-default: v1.15.0
 
 _`monitoring_enabled`
   Enable installation of cluster monitoring solution provided by the

magnum/drivers/common/templates/kubernetes/fragments/enable-keystone-auth.sh

@@ -6,7 +6,7 @@ step="enable-keystone-auth"
 printf "Starting to run ${step}\n"
 
 if [ "$(echo $KEYSTONE_AUTH_ENABLED | tr '[:upper:]' '[:lower:]')" != "false" ]; then
-    _prefix=${CONTAINER_INFRA_PREFIX:-docker.io/openstackmagnum/}
+    _prefix=${CONTAINER_INFRA_PREFIX:-docker.io/k8scloudprovider/}
     CERT_DIR=/etc/kubernetes/certs
 
     # Create policy configmap for keystone auth

magnum/drivers/k8s_fedora_atomic_v1/templates/kubecluster.yaml

@@ -654,7 +654,7 @@ parameters:
   k8s_keystone_auth_tag:
     type: string
     description: tag of the k8s_keystone_auth container
-    default: v1.14.0
+    default: v1.15.0
 
   monitoring_enabled:
     type: boolean

magnum/drivers/k8s_fedora_coreos_v1/templates/kubecluster.yaml

@@ -654,7 +654,7 @@ parameters:
   k8s_keystone_auth_tag:
     type: string
     description: tag of the k8s_keystone_auth container
-    default: v1.14.0
+    default: v1.15.0
 
   monitoring_enabled:
     type: boolean

releasenotes/notes/keystone-auth-repo-6970c05f44299326.yaml

@@ -0,0 +1,5 @@
+---
+fixes:
+  - |
+    k8s-keystone-auth now uses the upstream k8scloudprovider docker repo instead
+    of the openstackmagnum repo.