make admin.conf -> .kube/config non-executable

Almost certainly, the .kube/config file (YAML) should not be executable.

roles/kubernetes/client/tasks/main.yml

@@ -40,7 +40,7 @@
     src: "{{ kube_config_dir }}/admin.conf"
     dest: "/root/.kube/config"
     remote_src: yes
-    mode: "0700"
+    mode: "0600"
     backup: yes
 
 - name: Copy admin kubeconfig to ansible host