Use the condition name in tekton.dev/conditionCheck

The condition is implemented with a TaskRun. Right now the TaskRun
is labelled with tekton.dev/conditionCheck which contains the
name of the TaskRun itself. We should instead use the label to
carry data that is useful for discovering this TaskRun, and which
is not already available, i.e. the name of the Condition from
which the TaskRun was generated.

pkg/reconciler/pipelinerun/pipelinerun.go

@@ -885,7 +885,7 @@ func (c *Reconciler) updateLabelsAndAnnotations(pr *v1alpha1.PipelineRun) (*v1al
 
 func (c *Reconciler) makeConditionCheckContainer(rprt *resources.ResolvedPipelineRunTask, rcc *resources.ResolvedConditionCheck, pr *v1alpha1.PipelineRun) (*v1alpha1.ConditionCheck, error) {
 	labels := getTaskrunLabels(pr, rprt.PipelineTask.Name)
-	labels[pipeline.GroupName+pipeline.ConditionCheckKey] = rcc.ConditionCheckName
+	labels[pipeline.GroupName+pipeline.ConditionCheckKey] = rcc.Condition.Name
 
 	for key, value := range rcc.Condition.ObjectMeta.Labels {
 		labels[key] = value