title: Ansible include_tasks will not run when tags are specified
body: <p>I am including some tasks like shown below in my main.yml (as one of the tasks in a list of several other tasks)</p>
  <pre><code>- name          : remove swarm
    include_tasks : swarm.undo.yml
    tags          : [ 'never', 'debug' ]
  </code></pre>
  <p>when I run the playbook specifying the <code>--tags never</code> It just don't run, but shows the output below.</p>
  <pre><code>PLAY [all] *****************************************************************************************************************************************************
  
  TASK [Gathering Facts] *****************************************************************************************************************************************
  ok: [node2]
  ok: [node4]
  ok: [node3]
  ok: [node5]
  ok: [node1]
  ok: [node6]
  
  TASK [swarm : remove swarm] ************************************************************************************************************************************
  included: /home/xbox/Work/Infra/roles/swarm/tasks/swarm.undo.yml for node1, node2, node3, node4, node5, node6
  
  PLAY RECAP *****************************************************************************************************************************************************
  node1                      : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
  node2                      : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
  node3                      : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
  node4                      : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
  node5                      : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
  node6                      : ok=2    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0 
  </code></pre>
  <p>If I do not specify and comment out the other tasks in that group (plus remove the <code>never</code> tag). It runs as it should.</p>
  <p>Why is this behavior? What should I do to make it run correctly?</p>