Ensure docs.nasqueron.org root directory exists

Summary:
When the root site hasn't been provisioned yet, the git state
can't clone the repository, as it doesn't create the parent
folder.

Test Plan: Deploy the docs.n.o/salt-wrapper documentation

Reviewers: dereckson

Reviewed By: dereckson

Differential Revision: https://devcentral.nasqueron.org/D1081