Plugin and devfile registry will fail to build if any line ends in tab character

[amisevsk]

Describe the bug

Due to an open issue with PyYAML (which is the main dependency of yq), any yaml files in registries that end in tab characters will cause builds to fail.

Expected behavior

The yaml reference parser does not have an issue with trailing tabs, so this appears to be a PyYAML issue, but it's probably good practice to avoid trailing whitespace in meta.yamls anyways. It would be great to have a linter of some sort check for e.g. 1) file ends in newline and 2) no trailing whitespace on PRs.

Additional context

See #15483 for our initial encounter with the issue.

[l0rd]

Maybe https://stickler-ci.com/?

[che-bot]

Issues go stale after 180 days of inactivity. lifecycle/stale issues rot after an additional 7 days of inactivity and eventually close.

Mark the issue as fresh with /remove-lifecycle stale in a new comment.

If this issue is safe to close now please do so.

Moderators: Add lifecycle/frozen label to avoid stale mode.

[ericwill]

👍 this should be part of PR checks for the registries.