Make /etc/icingadb the home dir of icingadb

... because icingadb owns it.
4 jobs for bugfix/user-home in 3 minutes and 8 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #46583
docker
build/debian/buster

00:02:40

passed #46584
docker
build/ubuntu/bionic

00:02:17

 
  Test
passed #46585
docker
test/debian/buster

00:00:27

passed #46586
docker
test/ubuntu/bionic

00:00:25