Allow Jenkins CD to publish static sites

Summary:
Jenkins CD connects to deploy@ysul to publish rAPI and rDOCS,
while Jenkins CI connected to alken-orin@ysul to publish rWWW.

The /var/run/deploy folder contains aliases with FQDN,
as the SSH publisher always use relative paths.

It also contains allowed SSH credentials.

See also T1569 for the different uses of the deploy account.

Test Plan: Deploy on Ysul

Reviewers: dereckson

Reviewed By: dereckson

Differential Revision: https://devcentral.nasqueron.org/D2414