title: Nice way to overcome the unquoted colon error in Ansible YAML files
body: <p>It seems that Ansible fails to parse things like:</p>
  
  <pre><code> with_items:
      - { regexp:'^AcceptEnv\s', line:'AcceptEnv LANG LC_* P4* GIT_* HGUSER RD_*' }
  
            ^
  </code></pre>
  
  <blockquote>
    <p>This one looks easy to fix.  There seems to be an extra unquoted colon
    in the line and this is confusing the parser. It was only expecting to
    find one free colon. The solution is just add some quotes around the
    colon, or quote the entire line after the first colon.</p>
  </blockquote>
  
  <p>What would be a nice and clean way to avoid this error? </p>