Define nasqueron.org DNS zone

Summary:
Initial DNS zone imported from current ns2.he.net content: P372

Variables allow to solve CNAME/TXT and CNAME/SSHFP issues:
Knot enforce strictly the exclusion between CNAME and other records.

Ref T1217

Signed-off-by: Sébastien Santoro <dereckson@espace-win.org>

Test Plan: salt dns-OO1 state.sls roles/dns

Reviewers: dereckson

Reviewed By: dereckson

Maniphest Tasks: T1217

Differential Revision: https://devcentral.nasqueron.org/D3654