title: Append contents of a source file to a destination file
body: <p>I need to scan <code>/etc/fstab</code> file for an entry and if it is not present append the contents of another file into <code>/etc/fstab</code>.</p>
  
  <p>Ansible modules that I've seen do not seem to allow appending a file to another file instead just adding a specific "text" line.</p>