cli: job restart command

.changelog/16278.txt

@@ -0,0 +1,3 @@
+```release-note:improvement
+cli: Added new `nomad job restart` command to restart all allocations for a job
+```

api/tasks.go

@@ -976,6 +976,12 @@ func (t *Task) SetLogConfig(l *LogConfig) *Task {
 	return t
 }
 
+// SetLifecycle is used to set lifecycle config to a task.
+func (t *Task) SetLifecycle(l *TaskLifecycle) *Task {
+	t.Lifecycle = l
+	return t
+}
+
 // TaskState tracks the current state of a task and events that caused state
 // transitions.
 type TaskState struct {

command/commands.go

@@ -415,6 +415,11 @@ func Commands(metaPtr *Meta, agentUi cli.Ui) map[string]cli.CommandFactory {
 				Meta: meta,
 			}, nil
 		},
+		"job restart": func() (cli.Command, error) {
+			return &JobRestartCommand{
+				Meta: meta,
+			}, nil
+		},
 		"job deployments": func() (cli.Command, error) {
 			return &JobDeploymentsCommand{
 				Meta: meta,