* startup: add sum testcase

* mean, max, min, sum

* refine test mul

* refine test mul case

* refine div, mul, sub test case

* refine masked_fill test case

Co-authored-by: Xiaoyu Zhang <35585791+BBuf@users.noreply.github.com>
Co-authored-by: oneflow-ci-bot <69100618+oneflow-ci-bot@users.noreply.github.com>