title: ebextensions: yum does not install package
body: <p>I am trying to make an ebextensions file which will install wkhtmltopdf.</p>
  
  <p>Currently it looks like this:</p>
  
  <pre><code>packages: 
   yum:
    xorg-x11-fonts-75dpi: []
    libpng: []
    xz: [] 
    urw-fonts: []
    libXext: []
    openssl-devel: []
    libXrender: []
  rpm:
     wkhtmltopdf: https://s3-eu-west-1.amazonaws.com/myS3Account/wkhtmltox-0.12.2.1_linux-centos5-amd64.rpm
  </code></pre>
  
  <p>In this case, wkthmltopdf fails to install. I get the following error:</p>
  
  <pre><code>Failed dependencies:
    xorg-x11-fonts-75dpi is needed by wkhtmltox-1:0.12.2.1-1.x86_64
  </code></pre>
  
  <p>If I use SSH to connect to my EC2 instance, I can sucessfully install wkhtml by manually running "yum install xorg-x11-fonts-75dpi", followed by "wget wkthmltopdf-..." and "rpm --install wkhtmltopdf-..". If I skip the yum step, rpm complains that wkhtmltopdf needs the xorg package.</p>
  
  <p>It seems like xorg-x11-fonts-75dpi is not installed by ebextensions on deploy. Am I doing something wrong?</p>