Marathon-LB v1.12.0

Noteworth changes(s):

• Update to HAProxy 1.8.4
• Change reload mechanism away from iptables hack, use HAProxy 1.8 features instead

Full changelog:

v1.11.3...v1.12.0

Shortlog:

$ git shortlog v1.11.3..HEAD
Drew Kerrigan (5):
      Check for MESOS_TCP (#509)
      Add long backend proxypass path test (#499)
      Fix bug in config validation and reduce marathon calls (#563)
      Add missing parameter to regenerate_config call (#573)
      Merge beta features into master (bump to HAProxy 1.8.4) (#569)

Joerg Schad (1):
      Fixed broken links (#568)

Justin Lee (3):
      Fix build status link (#548)
      Use multiple keyservers for gpg verify of tini during Docker build (#549)
      Work around python3 > dh-python > dkpg-dev > make dependency (#564)

Nick (1):
      Https frontend grouping by vhost (#524)

Tyler Marshall (1):
      Fix ordering of acls that include paths when using haproxy map with https (#447)

gauripowale (1):
      Adding MLB Integration Tests to CI (#570)

Known Issues:

• Existing custom HAPROXY_HEAD templates will cause v1.12.0 to not start up properly. Please remove daemon and add stats socket /var/run/haproxy/socket expose-fd listeners in the global section of your custom HAPROXY_HEAD to resolve the issue. More can info be found here: https://docs.mesosphere.com/services/marathon-lb/advanced/#global-template