use kubernetes 1.22 for e2e exp

Author: zmalik

test/e2e/config/azure-dev.yaml

@@ -180,7 +180,7 @@ providers:
         new: "--v=2"
 
 variables:
-  AKS_KUBERNETES_VERSION: "${KUBERNETES_VERSION:-stable-1.19}"
+  AKS_KUBERNETES_VERSION: "${KUBERNETES_VERSION:-stable-1.22}"
   KUBERNETES_VERSION: "${KUBERNETES_VERSION:-stable-1.22}"
   ETCD_VERSION_UPGRADE_TO: "3.5.1-0"
   COREDNS_VERSION_UPGRADE_TO: "v1.8.6"