horizon 18.3.4 release

meta:version: 18.3.4
meta:diff-start: -
meta:series: ussuri
meta:release-type: release
meta:pypi: no
meta:first: no
meta:release:Author: Elod Illes <elod.illes@est.tech>
meta:release:Commit: manchandavishal <manchandavishal143@gmail.com>
meta:release:Change-Id: I92c10ccb39f738e96ee770bf162d5ab209d4431f
meta:release:Code-Review+1: Vishal Manchanda <manchandavishal143@gmail.com>
meta:release:Code-Review+2: Elod Illes <elod.illes@est.tech>
meta:release:Code-Review+2: Sean McGinnis <sean.mcginnis@gmail.com>
meta:release:Workflow+1: Sean McGinnis <sean.mcginnis@gmail.com>