Upgrade helm from 2.9 to 2.11 (#3638)

roles/download/defaults/main.yml

@@ -189,7 +189,7 @@ test_image_repo: busybox
 test_image_tag: latest
 busybox_image_repo: busybox
 busybox_image_tag: 1.29.2
-helm_version: "v2.9.1"
+helm_version: "v2.11.0"
 helm_image_repo: "lachlanevenson/k8s-helm"
 helm_image_tag: "{{ helm_version }}"
 tiller_image_repo: "gcr.io/kubernetes-helm/tiller"