* move batch_norm prim test to op_test

* fix optest bug

* add test to cmake

* add cinn test case

* fix batch_norm prim grad bf16

* fix code

* add cuda check

* fix batch_norm bfloat16

* fix cpu bfloat16 bug

* skip non-bfloat16-supported platform

* fix code

* fix cinn rtol and atol in bfloat16

* fix name

* fix config