Rewrite vyatta-conntrack-sync in new XML and Python flavor
This is the umbrella task for vyatta-conntrack-sync
While doing the rewrite the following config items should be migrated:
* [ ] `service conntrack-sync ignore-address ipv4` -> `service conntrack-sync ignore-address`, we can calculate the address-family automagically (`is_ipv4()` or `is_ipv6()`