Just for cosmetics

Following the template-formula example.

/var/log group in Ubuntu is syslog. This formula breaks
Ubuntu logrotate.

The iteritems dictionary method has been removed in Python 3 and using
items() is typically no problem in our case due to the fact that
dictionaries are rather small.

This fixes #15

This allows users to target this states to minions for which no pillar
has been defined (yet).

splits config file name and log file path, so you configure both.
This fixes #5.

it's crond service on fedora that initiates logrotate