title: Salt does not recognise packages in SLS file
body: <p>I am quite a noob to Salt as well as Nagios but either I am missing something obvious or it is a Bug.</p>
  
  <p>I downloaded the nagios-formula in /srv/formulas and have set up rest of master &amp; minions. I am able to do basic apache installations on all minions (3 vagrant machines - 1 master and 3 minions including master machine minion). What I want to achieve is have naagios server on master and NRPE client and plugins on minions so my top.sls looks like:
  <code>
  base:
    'smaster*':
      - nagios.server
    '*sagent.learn.com':
      - nagios.plugins
      - nagios.nrpe.server:
          cfg_dir: /etc/nagios/nrpe.d/
      - nagios.nrpe:
          cfg_dir: /etc/nagios/nrpe.d/
  </code></p>
  
  <p>Now on agents - nagios.plugins gets installed but nothing else changes. Even a syntax error in "nrpe.server" is not complained about. Also all executions of state.highstate run fine - but without any intended effect. Also if I miss any of cfg_dir - it will complain!</p>