add the option of enabling log rotation via the logrotate module

[wolfspyre]

in the general philosophy of cleaning up after oneself, we should provide a means to automatically rotate the logs generated by the services we manage.

[rendhalver]

I found a module for doing logrotate a while back https://forge.puppetlabs.com/rodjek/logrotate.
Ubuntu seem to setup logrotate for apache automatically if the file ends in .log.
Need to investigate other platforms to see if they already have logrotate setups.

[wolfspyre]

I'm gonna start on this now

[wolfspyre]

if some puppet builtin fact doesn't exist for this, I'm going to make a fact when then master resources are enabled, and use that fact's presence to determine if we should lay down logrotate bits for puppet master/puppetdb/