Add configure_sudoers variable

tasks/sudoers.yml

@@ -7,3 +7,4 @@
     mode: 0440
     validate: 'visudo -cf %s'
   become: yes
+  when: configure_sudoers

vars/misc.yml

@@ -9,3 +9,5 @@ nodejs_npm_global_packages:
   - name: gulp
 
 sublime_path: "~/Library/Application Support/Sublime Text 2"
+
+configure_sudoers: yes