security/letsencrypt.sh: Update to 2016-02-17
- Update to latest version
- Includes upstream fix for cleanup command [1]
- Add PORTDOCS
https://github.com/lukas2511/letsencrypt.sh/pull/137 [1]
Reviewed by: sascha_root-login.org (maintainer), koobs (mentor)
Approved by: sascha_root-login.org (maintainer), koobs (mentor)
Differential Revision: D5297