message: Fix build for cudf 0.18
  Cudf 0.18 wasn't building - fix by changing the include order so that the libcudf/libcudacxx
  include directory takes precendence over /usr/local/cuda/include (as suggested by
  https://github.com/rapidsai/cudf/issues/6961)
diff: @@ -131,6 +131,8 @@ include_directories(
  ${PROJECT_SOURCE_DIR}
  ${PROJECT_SOURCE_DIR}/test
  ${PROJECT_SOURCE_DIR}/HugeCTR/include
  + $ENV{CONDA_PREFIX}/include
  + $ENV{CONDA_PREFIX}/include/libcudf/libcudacxx
  ${CUDA_INCLUDE_DIRS}
  ${PROJECT_SOURCE_DIR}/third_party/cutlass
  ${PROJECT_SOURCE_DIR}/third_party/cuml/cpp
  @@ -146,9 +148,7 @@ include_directories(
  ${CUDNN_INC_PATHS}
  ${NCCL_INC_PATHS}
  ${HWLOC_INC_PATHS}
  - ${UCX_INC_PATHS}
  - $ENV{CONDA_PREFIX}/include
  - $ENV{CONDA_PREFIX}/include/libcudf/libcudacxx)
  + ${UCX_INC_PATHS})
  if(ENABLE_MULTINODES)
  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DENABLE_MPI")
  