Revert "TT#35952 Freeze puppet version to v5.5"

This reverts commit ee2398b6f8.

We've removed mcollective from our infrastructure and ready to update
puppet to the latest available version.

Change-Id: I7a860be9e051ed09bd69c165aaafc2acd1f17cd8

templates/scripts/includes/deployment.sh

@@ -2112,7 +2112,7 @@ puppet_install_from_puppet () {
 
   echo "Installing 'puppet-agent' with dependencies"
   cat >> ${TARGET}/etc/apt/sources.list.d/puppetlabs.list << EOF
-deb ${DEBIAN_URL}/puppetlabs/ ${DEBIAN_RELEASE} main puppet5 dependencies
+deb ${DEBIAN_URL}/puppetlabs/ ${DEBIAN_RELEASE} main puppet dependencies
 EOF
 
   puppet_gpg='/root/puppet.gpg'