Keep the apt.conf.d and sources.list.d clean

This allows a more fine-grained approach to cleaning the various .d dirs.
Implement deploying apt-dater and apt-dater-host
Merge pull request #19 from DavidS/master

Please review this thoroughly before merging!
explicitly define the update order, uses a generated file to get proper diff support from File
apt::dater: better shield the hosts generation from re-execution

loglevel=>debug still causes an active resource in the catalog, leading
to "flapping" in any report processor.
pass ssh_port on to apt::dater::host_fragment
Merge pull request #20 from DavidS/master

Building on the work from yesterday: pass through the ssh port and some fixes