Enable TLS on Eglide sites

Summary:
TLS Mozilla modern cypher suite is used.

Reference: https://mozilla.github.io/server-side-tls/ssl-config-generator/

Test Plan:
Deployed on Eglide, tested with @jokerozen site:

• https://www.ssllabs.com/ssltest/analyze.html?d=robot.paysannerebelle.com (A+)
• https://tls.imirhil.fr/https/robot.paysannerebelle.com/ (A+)

Reviewers: Sandlayth, jokerozen

Reviewed By: Sandlayth

Subscribers: jokerozen

Maniphest Tasks: T819

Differential Revision: https://devcentral.nasqueron.org/D967