publish the port too when exchanging hostkeys
exchange the key for a plain hostname within hosts of the same domain name
Purge unmanaged ssh host keys
Start providing default config files.

Set openssh::template to "openssh/sshd_config-${::lsbdistcodename}.erb".
This allows the openssh::port parameter to actually have an effect.
Merge pull request #6 from DavidS/master

Start managing the default config file for well-known sshd versions.