Created by: heavengate

Add inplace_abn OP

• original PR: https://github.com/PaddlePaddle/Paddle/pull/19465
• inplace_abn_grad only takes Y as input, remove input X
• add inplace_abn Python API instead of implement in batch_norm python API to specify in place instead of build_strategy.emable_inplace because batch_norm_grad takes X as input, inplace_abn_grad takes Y as input, OpMaker is different，but op_type should be choose in python API，where enable_inplace strategy is unknown

中文文档: https://github.com/PaddlePaddle/FluidDoc/pull/1938