Bump k8s version to v1.11.1

Task: 24247
Story: 2003103

Change-Id: I807302261b364197db97d5e05d4c7ab265fda9ed

magnum/drivers/k8s_fedora_atomic_v1/templates/kubecluster.yaml

@@ -325,7 +325,7 @@ parameters:
   kube_tag:
     type: string
     description: tag of the k8s containers used to provision the kubernetes cluster
-    default: v1.9.3
+    default: v1.11.1
 
   etcd_tag:
     type: string
@@ -340,7 +340,7 @@ parameters:
   kube_version:
     type: string
     description: version of kubernetes used for kubernetes cluster
-    default: v1.9.3
+    default: v1.11.1
 
   kube_dashboard_version:
     type: string

magnum/drivers/k8s_fedora_ironic_v1/templates/kubecluster.yaml

@@ -321,12 +321,12 @@ parameters:
   kube_tag:
     type: string
     description: tag of the k8s containers used to provision the kubernetes cluster
-    default: v1.9.3
+    default: v1.11.1
 
   kube_version:
     type: string
     description: version of kubernetes used for kubernetes cluster
-    default: v1.9.3
+    default: v1.11.1
 
   kube_dashboard_version:
     type: string

releasenotes/notes/upgrade-to-k8s-v1.11.1-8065fd768873295d.yaml

@@ -0,0 +1,5 @@
+---
+upgrade:
+  - |
+    New clusters will be created with kube_tag=v1.11.1 or later. v1.11.1 is
+    the default version in the Rocky release.