Comment out the Riemann plugin config so that the plugin doesn't get loaded.
Purge non-Puppet-managed collectd configs.
Use the right path for the authentication log on the Ubuntu VMs.
Added an auth.conf that allows for serving files from custom mountpoints; just copy/paste it over /etc/puppet/auth.conf after the Puppet master VM is booted up and provisioned.
Added an fileserver.conf that allows for serving files from custom mountpoints; just copy/paste it over /etc/puppet/fileserver.conf after the Puppet master VM is booted up and provisioned.