Ensure all registry scheduled job have slack alerts for failures #1760
Description
Which area is this issue related to?
/area ci
/area registry
Issue Description
We should make sure that all the scheduled jobs of the registry include a slack notification step for every failure.
This way we will get notified if a job fails and try to find a fix.
At the moment only the validate-stacks has a notification in place. Ideally we should have one in validate-samples too.
Another part of the task is to confirm that the current notification steps are working and we are still receiving alerts on slack if something fails.
Acceptance Criteria
- validate-samples has a slack notification step
- all slack notification steps in registry workflows work fine.
Target Odo Version
Target Odo version: