(MODULES-552) Add capability to specify column_privileges

Fixes Jira Issue [MODULES-552](https://tickets.puppetlabs.com/browse/MODULES-552).
Now I got it... Since it's not quaranteed, that there is a space between the keyword and the bracked (at least not in the type) it should be: ```strip.split(/\s+|\b/,2)```. Thanks for that simplification.