Marathon-lb 1.2.1

Notable changes:

• Dropped support for TLS 1.0 by default (older HTTPS clients will no longer work with MLB)
• Allow specifying multiple certs by env vars

Full changelog: v1.2.0...v1.2.1

Shortlist:

in ~/dev/marathon-lb
± |master ✗| → git shortlog v1.2.0..HEAD | cat
Brenden Matthews (6):
      Update README.md
      Update README.md
      Update README.md
      Update README.md
      Fix bad check for HAPROXY_{n}_FRONTEND_HEAD.
      Fix minor regression from #169. (#170)

James Awesome Morelli (1):
      Refactor `process_json` and `get_app_info` in bluegreen_deploy.py (#174)

Lukas Lösche (2):
      Merge pull request #169 from mesosphere/lloesche/multicert
      Allow to specify multiple certs in Docker ENV (#172)

Matt Kirman (1):
      Removed TLS 1.0 from the default HAProxy SSL options (#176)

Scott Schneider (1):
      Add Velocity build status badge to README.md (#157)

vixns (1):
      labels fix (#173)