yum repo

content of .repo file

[puppetlabs-products]
name=Puppet Labs Products El 6 - $basearch
baseurl=http://yum.puppetlabs.com/el/6/products/$basearch
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-puppetlabs
enabled=1
gpgcheck=1

gistfile1.txt

node default {
   include base
}

class base {
   yumrepo { "Puppet":
      baseurl => "http://yum.puppetlabs.com/$operatingsystem/$operatingsystemrelease/$architecture",
      descr => "Puppet Labs",
      enabled => 1,
      gpgcheck => 1,
      gpgkey => "http://yum.puppetlabs.com/RPM-GPG-KEY-puppetlabs",
   }
}