Add LastUpdateTime in status

[KunWuLuan]

We need record the queueunit dequeue time to judge when to requeue the queueunit if the pod of queueunit can not be scheduled by scheduler.

[KunWuLuan]

Hi, @denkensk . I was wondering if you could help me review the pull request.
Thank you in advance for your time and assistance.

[KunWuLuan]

/assign