Fix Issue 70 add file mode parameters

- New parameter 'logrotate_args' for managing the startup parameters
  of logrotate.
- Add new unit tests for the cron.pp

FreeBSD is not in the list of supported os as the module has only
partial support for it. The test set has some additional test cases to cover
the differences in FreeBSD startup script.

Fix test

Use logrotate::cron rather than file resourcefor hourly cron

modulesync 1.9.2

drop EOL OSs; fix puppet version range

Remove docker nodesets

Declaring both `Logrotate::Conf['/etc/logrotate.conf]` and
`Class['logrotate']` will result in errors from Puppet as described
in #116 which is the result of not using the class correctly. Update
readme to add a not warning users not to do this and update the
example for `Class['logrotate']` to indicate that feature parity
with `Logrotate::Conf['/etc/logrotate.conf']` already exists.

Fixes #116

(docs) Update readme with warning note and bigger example of defaults

Manage logrotate startup arguments

Fix freebsd default rules

release 3.3.0