Release 2018_029 (2018-10-10)

NixOS platform

• Update InfluxDB to 1.6.3 (#106460).

• Fix metric gaps on central statshost (#106553).

• Backport Chromium 69.0.3497.81 and Chromedriver 2.41 from 18.09 (#106464, #105369).

Gentoo platform

• Work around performance bottleneck while removing deleted VMs on backup servers (#106478).

• Fix bug in VM root drive resizing (#105199)