IF Distro Check: Ubuntu 16 or 17

[matt...@gmail.com]

Hi, i want to check (puppet facts / facter: is there a difference?) which version is installed on the machine (we use Ubuntu 16 for older and Ubuntu 17 for newer laptops, they have different WLAN Modules) . Can you please support me with the correct "Mayor-Distro-Check" ? 

It doesnt work like that:

  if $facts['os id'] == 'Ubuntu' {

    if $facts['os major'] == '16.04.' {

        $ubunutname = 'xenial'

        $wlankarte  = 'wlp4s0'

        

    }

    if $facts['os major'] == '17.04' {

      $ubunutname = 'zesty'

      $wlankarte  = 'wlp58s0'

    }

    else{

      fail("Unsupported major of ${facts}['operatingsystem']")

    }

  }