Fixes: #427

Resolve "Nextcloud gets removed in CI after a while"

Closes #421

See merge request openappstack/openappstack!169

Nextcloud and Onlyoffice can take a loooong time to deploy,
because OO depends on proper LE certs, and the large image downloads can take
a while as well (see #422).

Closes: #421

Resolve "Prometheus helmrelease: unable to yaml.Unmarshal"

Closes #420

See merge request openappstack/openappstack!165

Fixes: #420

Resolve "create-vps stage should be more verbose"

Closes #418

See merge request openappstack/openappstack!161

fix a bug in the can_reuse_machine.py script

See merge request openappstack/openappstack!159

Resolve "Move all apps to flux"

Closes #404 and #394

See merge request openappstack/openappstack!153

Resolve "Test auto-upgrade of apps"

Closes #157

See merge request openappstack/openappstack!61

Resolve "master pipeline sometimes fails"

Closes #398

See merge request openappstack/openappstack!152

Resolve "cli: hostname should default to CLUSTER_NAME"

Closes #359, #360, and #361

See merge request openappstack/openappstack!150

Add debug prints to failing CI pipeline script

See merge request openappstack/openappstack!151

kaniko should use the same name for the docker image as the rest of the gitlab-ci file (_SLUG instead of _NAME)