Ignore failing pods and jobs from NC installation

Closes #379

See merge request openappstack/openappstack!184

Currently, Nextcloud installation is a pain where a lot of jobs and pod
fail until NC is finally installed. Still they show up in proemetheus and
create noise, why we ignore them in this check.
Once we achieve a better NC installation we should revert this.

Closes: #379

Improve cert-manager troubleshooting

See merge request openappstack/openappstack!170

Resolve "NC has two mariadb pods"

Closes #431

See merge request openappstack/openappstack!175

fix can_reuse_machine.py script

See merge request openappstack/openappstack!174

Resolve "Cert-manager doesn't fetch proper certs in CI"

Closes #423

See merge request openappstack/openappstack!168

Resolve "Hostname too long"

Closes #419

See merge request openappstack/openappstack!167

Resolve "Use common ansible resource for flux secrets"

Closes #409 and #413

See merge request openappstack/openappstack!157

Fixes: #419

Closes: #409

This is currenly needed to install OAS apps, so it shouldn't be configurable.

Fixes: #413

Resolve "Increase backoffLimit for nextcloud setup-apps job"

Closes #436

See merge request openappstack/openappstack!177

make rsync use ssh args so you can do --ansible-param='--ssh-common-args=-i ~/.ssh/openappstack-ci'

See merge request openappstack/openappstack!154

Resolve "Add health-test job to check successful helm-operator deployments"

Closes #399 and #427

See merge request openappstack/openappstack!164

Resolve "Increase OnlyOffice live-/readyness limits"

Closes #427

See merge request openappstack/openappstack!171

Fixes: #427

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