Add V1 TaskRun Golang structs

This commit adds structs and validation for v1 TaskRun, including params,
resultRef and workspaces. This is copied from v1beta1 with the following exceptions:

- omitted TaskRunResources
   - This includes the `TaskRunInputs` and `TaskRunOutputs` and respective test
- omitted `CloudEvents` related fields including `CloudEventDeliveryState`
- renamed the Go fields of `StepState.ContainerName` to `StepState.Container`and
`SidecarState.ContainerName` to `SidecarState.Container` but not the api fields
- renamed `taskResults` to `results`

pkg/apis/pipeline/v1/taskrun_defaults.go

@@ -0,0 +1,73 @@
+/*
+Copyright 2022 The Tekton Authors
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1
+
+import (
+	"context"
+	"time"
+
+	"github.com/tektoncd/pipeline/pkg/apis/config"
+	pod "github.com/tektoncd/pipeline/pkg/apis/pipeline/pod"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"knative.dev/pkg/apis"
+)
+
+var _ apis.Defaultable = (*TaskRun)(nil)
+
+// ManagedByLabelKey is the label key used to mark what is managing this resource
+const ManagedByLabelKey = "app.kubernetes.io/managed-by"
+
+// SetDefaults implements apis.Defaultable
+func (tr *TaskRun) SetDefaults(ctx context.Context) {
+	ctx = apis.WithinParent(ctx, tr.ObjectMeta)
+	tr.Spec.SetDefaults(ctx)
+
+	// If the TaskRun doesn't have a managed-by label, apply the default
+	// specified in the config.
+	cfg := config.FromContextOrDefaults(ctx)
+	if tr.ObjectMeta.Labels == nil {
+		tr.ObjectMeta.Labels = map[string]string{}
+	}
+	if _, found := tr.ObjectMeta.Labels[ManagedByLabelKey]; !found {
+		tr.ObjectMeta.Labels[ManagedByLabelKey] = cfg.Defaults.DefaultManagedByLabelValue
+	}
+}
+
+// SetDefaults implements apis.Defaultable
+func (trs *TaskRunSpec) SetDefaults(ctx context.Context) {
+	cfg := config.FromContextOrDefaults(ctx)
+	if trs.TaskRef != nil && trs.TaskRef.Kind == "" {
+		trs.TaskRef.Kind = NamespacedTaskKind
+	}
+
+	if trs.Timeout == nil {
+		trs.Timeout = &metav1.Duration{Duration: time.Duration(cfg.Defaults.DefaultTimeoutMinutes) * time.Minute}
+	}
+
+	defaultSA := cfg.Defaults.DefaultServiceAccount
+	if trs.ServiceAccountName == "" && defaultSA != "" {
+		trs.ServiceAccountName = defaultSA
+	}
+
+	defaultPodTemplate := cfg.Defaults.DefaultPodTemplate
+	trs.PodTemplate = pod.MergePodTemplateWithDefault(trs.PodTemplate, defaultPodTemplate)
+
+	// If this taskrun has an embedded task, apply the usual task defaults
+	if trs.TaskSpec != nil {
+		trs.TaskSpec.SetDefaults(ctx)
+	}
+}