[HIPIFY][tests] Exclude all CUB tests if CUDA_CUB_ROOT_DIR is not set

tests/hipify-clang/lit.cfg

@@ -33,6 +33,8 @@ if not config.cuda_dnn_root:
     warns = True
 if not config.cuda_cub_root:
     config.excludes.append('cub_01.cu')
+    config.excludes.append('cub_02.cu')
+    config.excludes.append('cub_03.cu')
     print("WARN: CUB tests are excluded due to unset CUDA_CUB_ROOT_DIR")
     warns = True
 if warns: