use dep as denpendency managment tool

vendor/k8s.io/apimachinery/pkg/util/runtime/runtime.go

@@ -43,7 +43,7 @@ var PanicHandlers = []func(interface{}){logPanic}
 // TODO: remove this function. We are switching to a world where it's safe for
 // apiserver to panic, since it will be restarted by kubelet. At the beginning
 // of the Kubernetes project, nothing was going to restart apiserver and so
-// catching panics was important. But it's actually much simpler for montoring
+// catching panics was important. But it's actually much simpler for monitoring
 // software if we just exit when an unexpected panic happens.
 func HandleCrash(additionalHandlers ...func(interface{})) {
 	if r := recover(); r != nil {
@@ -128,7 +128,9 @@ func (r *rudimentaryErrorBackoff) OnError(error) {
 	r.lastErrorTimeLock.Lock()
 	defer r.lastErrorTimeLock.Unlock()
 	d := time.Since(r.lastErrorTime)
-	if d < r.minPeriod {
+	if d < r.minPeriod && d >= 0 {
+		// If the time moves backwards for any reason, do nothing
+		// TODO: remove check "d >= 0" after go 1.8 is no longer supported
 		time.Sleep(r.minPeriod - d)
 	}
 	r.lastErrorTime = time.Now()