Fix for future parser

I'm not entirely sure why this was having issues with the future parser,
but there was something funny with the pp function.
Update to support PE3.x
Merge pull request #419 from mhaskel/future_parser

Fix for future parser
Merge pull request #420 from mhaskel/metadata_update

Update to support PE3.x
(MODULES-41) Change source for ip6tables provider

This will allow purging of ipv6 rules
Merge pull request #422 from hunner/fix_instances

(MODULES-41) Change source for ip6tables provider