PR 1031 (V4.20.1) introduced breaking changes

[david-bain]

Our codebase relied on data github_repository failing when a repo was not found. It is a good way to ensure during plan that a user has not mispelt a repository name.

PR 1031 introduced a change that resulted in just a message being returned if a repo is missing and the plan continuing. This has resulted in our check being effectively bypassed and deployments breaking.

As this is a minor release, could it be fixed that there is an optional flag to continue on missing repos with the default being to error?

[david-bain]

I wrote around this so it longer is an issue for us.