Elastic 2.5.0-6.3.2

Upgrades

• Elasticsearch and Kibana were upgraded to version 6.3.2. (#2824)
• The SDK library was upgraded to version 0.55.1. (commit). Please also take a look at at least the 0.50.0 release to understand the changes between the 0.40.x (the one Elastic 2.4.0-5.6.9 used) and 0.50.x versions of the SDK.

New Features

• Readiness-check interval, timeout, and delay are now configurable properties. ([#2866)]
• The number of open file descriptors (RLIMIT_NOFILE) is now a configurable property (http://man7.org/linux/man-pages/man2/getrlimit.2.html)s. (#2873)

Bug Fixes

• Fixed scenario where heterogeneous @zone constraints could result in ES in being unable to allocate shards. (#2889)

Improvements

• Sensitive environment keys are now filtered from log files. (#2748)
• Scheduler Marathon app now uses a file-based secret. (#2748)
• Service names are now validated with a regex. (#2861)
• License details were added to the package metadata. (#2867)
• Added service_account_credential parameter with file name value to scheduler Marathon app's ClassicRPCAuthenticatee Mesos module. (#2777)
• Move Elastic and Kibana artifacts to downloads.mesosphere.com. (#2762)