Release 2018_003 (2018-01-25)

Impact

• ElasticSearch instances will be restarted.

NixOS platform

• Add Role for Kibana (#29588).

• Update ElasticSearch to 2.4.4 (via role elasticsearch2).

• Add ElasticSearch 5.6.0 (via role elasticsearch5).

Gentoo platform

• Remove broken check for /dev/watchdog (#29441).