give pod a more debug-friendly name

[tianweidut]

Current Behavior

❯ k get pods -n starwhale                                                                                                                                                                       
NAME                                    READY   STATUS              RESTARTS      AGE                                                                                                           
4-0-hqj6h                               0/1     ImagePullBackOff    0             48m                                                                                                           
5-0-n9k47                               0/1     ImagePullBackOff    0             48m                                                                                                           
7-0-spxf6                               0/1     ContainerCreating   0             15s                                                                                                           
8-0-c4n86                               0/1     ContainerCreating   0             15s                                                                                                                                                                                                                                                    

task pod name is not meaningful for the developer.

Proposed Behavior
users can directly find pod name by the task name.