Prevent automatic merge if configured review team was not found #20
Description
Describe the issue
If review teams are configured, the app, by design requires these teams to be configured (and assigned to team members) on GitHub, too or otherwise the automatic merge won't work as expected. In fact, right now, the bot will simply assume these teams do not exist and thus merge once the first review comes in.
Steps to reproduce
- Configure reviewTeams: A & B
- Do not configure / grant review teams permissions on GitHub
- Let member of team A review
- Automatic merge is happening, without waiting for approval from team B
Expected Behavior
If configured teams are not accessible on GitHub, this is a configuration problem / miss-match. We should not do anything at all.
Related
Adding a status check and indicating why a merge cannot happen (i.e. hinting on the configuration error) would be nice to have, cf. #2.