Add Results fields to TaskRun and PipelineRun status

When a user kicks off a run, they will provide an endpoint to upload
logs to (initial implementation will be in #107). The corresponding
fields in `status` will indicate where the logs actually got uplaoded
to.

Once we actually get to #107, and especially once we start supporting
endpoints other than GCS, we may find this isn't useful and remove it.

Fixes tektoncd#146

pkg/apis/pipeline/v1alpha1/pipelinerun_types.go

@@ -111,6 +111,8 @@ type PipelineTriggerRef struct {
 // PipelineRunStatus defines the observed state of PipelineRun
 type PipelineRunStatus struct {
 	Conditions duckv1alpha1.Conditions `json:"conditions"`
+	// In #107 should be updated to hold the location logs have been uploaded to
+	Results Results `json:"results"`
 	// map of TaskRun Status with the taskRun name as the key
 	//+optional
 	TaskRuns map[string]TaskRunStatus `json:"taskRuns,omitempty"`

pkg/apis/pipeline/v1alpha1/taskrun_types.go

@@ -104,6 +104,9 @@ type TaskRunStatus struct {
 	// +optional
 	Conditions duckv1alpha1.Conditions `json:"conditions,omitempty"`
 
+	// In #107 should be updated to hold the location logs have been uploaded to
+	Results Results `json:"results"`
+
 	// PodName is the name of the pod responsible for executing this task's steps.
 	PodName string `json:"podName"`