arena get should display user

[happy2048]

arena get command should display user name,like:

arena get elastic-training

Name: elastic-training
Status: SUCCEEDED
Namespace: default
Priority: N/A
Trainer: ETJOB
Duration: 10d
Uid: xxxxxxxxxxxxx
ConsoleUser: xxxxxxxxx

Instances:
NAME STATUS AGE IS_CHIEF GPU(Requested) NODE

---

elastic-training-launcher Completed 10d true 0 cn-beijing.192.168.9.10

[github-actions]

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