add quotes around octal values

YAML loaders will load them as strings, providing a consistent behavior. This is also safer as JSON does not support octal values either.

roles/wordpress/tasks/main.yml

@@ -34,7 +34,7 @@
     state: directory
     owner: "{{ webserver_user }}"
     group: "{{ wordpress_group }}"
-    mode: 0755
+    mode: "0755"
 
 - name: Copy configuration file
   template:
@@ -42,4 +42,4 @@
     dest: "{{ wordpress_dir }}/wp-config.php"
     owner: "{{ webserver_user }}"
     group: "{{ wordpress_group }}"
-    mode: 0640
+    mode: "0640"