What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:
/kind task

What does this PR do / why do we need it:
Rectification distributed init interface.The goal is to make it unnecessary for users to configure backend.

Which issue(s) this PR fixes:

Fixes #
【易用性】分布式初始化init()区分硬件，rank和group_size获取API不一致
https://gitee.com/mindspore/dashboard?issue_id=I1SIRN
Special notes for your reviewers: