Improving yamllint configuration (#11389)

Signed-off-by: Bas Meijer <bas.meijer@enexis.nl>

roles/bootstrap-os/tasks/main.yml

@@ -36,7 +36,7 @@
   file:
     path: "{{ ansible_remote_tmp | default('~/.ansible/tmp') }}"
     state: directory
-    mode: 0700
+    mode: "0700"
 
 - name: Gather facts
   setup:
@@ -61,4 +61,4 @@
     state: directory
     owner: root
     group: root
-    mode: 0755
+    mode: "0755"