Use puppet that comes with OS

nunoc-ops does like this since 2018 so I think it will fly.

Also the package `puppet` seems to been around since at-least Ubuntu 14.04.

global/overlay/etc/cosmos/apt/SHA1SUM

@@ -1,6 +0,0 @@
-c8c591fc7bcc54c4a7cf35759ee35ef11936b9a8  puppetlabs-release_1.0-12_all.deb
-d69b9a005a604a6739dbcf2524de53fdd93f135f  puppetlabs-release_1.1-1_all.deb
-761a213324fd1bfa7bc76dc46d6a58b29f17b1a3  puppetlabs-release-pc1_1.1.0-4xenial_all.deb
-cfead6a6242a5407ea45ca9dd148c0e694df9ff8  puppetlabs-release-pc1_1.1.0-5yakkety_all.deb
-f0c104d210956b4a934076b49fb124107237a4ca  puppetlabs-release-pc1_1.1.0-5stretch_all.deb
-

global/pre-tasks.d/030puppet

@@ -8,16 +8,8 @@ set -e
 stamp="$COSMOS_BASE/stamps/puppet-tools-v01.stamp"
 
 if ! test -f $stamp -a -f /usr/bin/puppet; then
-    codename=`lsb_release -c| awk '{print $2}'`
-    puppetdeb="$COSMOS_REPO/apt/puppetlabs-release-${codename}.deb"
-    if [ ! -f $puppetdeb ]; then
-	echo "$0: Puppet deb for release $codename not found in $COSMOS_REPO/apt/"
-	echo "    Get it from https://apt.puppetlabs.com/ and put it in the Cosmos repo."
-	exit 1
-    fi
-    dpkg -i $puppetdeb
     apt-get update
-    apt-get -y install puppet-common
+    apt-get -y install puppet
 
     mkdir -p `dirname $stamp`
     touch $stamp