Deploy Zemke-Rhyne to Ysul

Summary:
The states follows the rZR README instructions.

Fixes T1275.

Test Plan:
On Ysul :
salt-call --local state.apply roles/webserver-legacy/zr

On Dwellers :
ssh -4 -i /root/.ssh/id_zr zr@ysul.nasqueron.org getcredentials 56 username

Reviewers: dereckson

Reviewed By: dereckson

Maniphest Tasks: T1275

Differential Revision: https://devcentral.nasqueron.org/D1150