Emit event when failing to update a taskrun

[afrittoli]

Expected Behavior

When the taskrun controller fails to update a taskrun status or labels/annotations, it should emit an event to signal this condition, similar to what the pipelinerun controller does.

Actual Behavior

An error is returned, so that the key is requeued, but not event is emitted.

Steps to Reproduce the Problem

1. pipeline/pkg/reconciler/taskrun/taskrun.go

   Line 208 in b435bd9

   return multierror.Append(err, c.updateStatusLabelsAndAnnotations(tr, original)).ErrorOrNil()

Additional Info

• Tekton Pipeline version:

v0.12.0

[afrittoli]

Fixed by #2526