add unattended-upgrades to its own job so it does not interfere with apt installations in the pipeline

Maarten de Waard authored 4 years ago and Mark committed 4 years ago

deleted untrustworthy title check. The check if the main div exists is more important and trustworthy

Closes: #575

Helm 2.15.0 broke for us (#338), and helm 2.15.1 might be responsible
for #357.
We need to upgrade a few components but for the upcoming OAS 0.2.1 release
we stay with helm 2.14.3.

This reverts commit ae877752, reversing
changes made to cd1ad365.

Now that helm is working again for our usecase (see details in
https://open.greenhost.net/openappstack/openappstack/issues/339)
we can install helm as snap again.

Closes: #339

This reverts commit 52910021.

We got an `Error: unsupported format` with an auto-updated Helm `2.15.0`
installed from snap.
Now we pin it to a specific working version and use the official install script.

Closes #27