This is needed because prepare-kubectl role can do just the same.
Also fixed rke tests to match.
Change-Id: I808df650a5f755e09c26d13db62ecfc1504a317c
Issue-ID: OOM-1907
Signed-off-by: Michal Zegan <m.zegan@samsung.com>
     - role: prepare-rke
       vars:
         mode: infra
+    - role: prepare-kubectl
+      vars:
+        kubectl_install: true
 
   get_url:
     url: "https://github.com/rancher/rke/releases/download/v{{ rke_version }}/rke_linux-amd64"
     dest: "{{ app_data_path }}/downloads/rke_linux-amd64"
-
-- name: "Install kubectl-{{ kubectl_version }}"
-  get_url:
-    url: "https://storage.googleapis.com/kubernetes-release/release/v{{ kubectl_version }}/bin/linux/amd64/kubectl"
-    dest: "/usr/local/bin/kubectl"
-    mode: 0755