title: Order of executing roles, tasks, pre_tasks, post_task. Can tasks be defined in playbook?
body: <p>In playbook we can define <code>roles</code>, <code>pre_tasks</code>, <code>post_tasks</code>.<br>
  Can we also define <code>tasks</code>  ?
  And second question is about order of executing these things. I know that order is following: <code>pre_tasks -&gt; roles -&gt; post_tasks</code>.<br>
  However, when <code>tasks</code> are executed? </p>