set test_parallel_executor_crf serial

Author: luotao1

python/paddle/fluid/tests/unittests/CMakeLists.txt

@@ -41,12 +41,14 @@ function(py_test_modules TARGET_NAME)
 endfunction()
 list(REMOVE_ITEM TEST_OPS test_warpctc_op)
 list(REMOVE_ITEM TEST_OPS test_dist_train)
-#list(REMOVE_ITEM TEST_OPS test_parallel_executor_crf)
-#list(REMOVE_ITEM TEST_OPS test_parallel_executor_fetch_feed)
+list(REMOVE_ITEM TEST_OPS test_parallel_executor_crf)
+list(REMOVE_ITEM TEST_OPS test_parallel_executor_fetch_feed)
 # TODO(wuyi): this test hungs on CI, will add it back later
 list(REMOVE_ITEM TEST_OPS test_listen_and_serv_op)
 foreach(TEST_OP ${TEST_OPS})
     py_test_modules(${TEST_OP} MODULES ${TEST_OP})
 endforeach(TEST_OP)
 py_test_modules(test_warpctc_op MODULES test_warpctc_op ENVS FLAGS_warpctc_dir=${WARPCTC_LIB_DIR} SERIAL)
 py_test_modules(test_dist_train MODULES test_dist_train SERIAL)
+py_test_modules(test_parallel_executor_crf MODULES test_parallel_executor_crf SERIAL)
+py_test_modules(test_parallel_executor_fetch_feed MODULES test_parallel_executor_fetch_feed SERIAL)