“1295e5ef5467a0a068179da243c20bc05e61f921”上不存在“python/paddle/v2/fluid/tests/unittests/test_cumsum_op.py”
* Chage `IndicateDataType` to `GetKernelType`. Make it easier to understand. * Change `OpKernelKey` to `OpKernelType` * Make operator developers can customize which kernel the operator will use in runtime.