PUP-2553: chkconfig should use resetpriorities when enabling services 

Adding again and answering questions present in https://github.com/puppetlabs/puppet/pull/2467

> I'm not immediately familiar with the 'resetpriorities' checkconfig argument, when was it added? 
> What versions of CentOS/RHEL/Suse have this version? Are there any compatibility issues that will
> be introduced with this change?" 

This was added to chkconfig for RHEL5 so RedHat and Centos with versions >= 5 will work.  Im not sure about SUSE as i dont use it

> changes like this it really helps if there's an issue associated associated with a change like this
Added as PUP-2553