Switch dy2st UT to eager mode by cmake (#41317)

* Switch dy2st UT to eager mode by cmake

* Rename ENVS

* Remove invalid UT

* Remove error UT

* Remove test_bert

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

 file(GLOB TEST_OPS RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}" "test_*.py")
 string(REPLACE ".py" "" TEST_OPS "${TEST_OPS}")
 set(GC_ENVS FLAGS_eager_delete_tensor_gb=0.0)
+set(DY2ST_EAGER_TEST_ENVS ${GC_ENVS} FLAGS_enable_eager_mode=1)
 
+set(TEST_EAGER_OPS test_bmn test_break_continue test_ifelse test_loop test_mnist_amp 
+    test_mnist_pure_fp16 test_mobile_net test_program_translator test_ptb_lm test_reinforcement_learning 
+    test_resnet test_resnet_amp test_resnet_pure_fp16 test_se_resnet test_sentiment test_seq2seq 
+    test_tsm test_word2vec test_yolov3)
 list(REMOVE_ITEM TEST_OPS test_lac)
 # NOTE(Aurelius84): In case of Windows CI, if open ON_INFER, RWLOCK of Scope will
 # be removed and will cause some random failed in multi-thread.
 if(NOT ON_INFER)
-    py_test_modules(test_lac MODULES test_lac)
+    py_test_modules(test_lac MODULES test_lac ENVS FLAGS_enable_eager_mode=1)
     set_tests_properties(test_lac PROPERTIES TIMEOUT 120)
 endif()
 
@@ -15,7 +20,12 @@ if(WIN32 AND NOT WITH_GPU)
 endif()
 
 foreach(TEST_OP ${TEST_OPS})
+    list(FIND TEST_EAGER_OPS ${TEST_OP} WAS_FOUND)
+    if (NOT WAS_FOUND EQUAL -1)
+        py_test_modules(${TEST_OP} MODULES ${TEST_OP} ENVS ${DY2ST_EAGER_TEST_ENVS})
+    else()
         py_test_modules(${TEST_OP} MODULES ${TEST_OP} ENVS ${GC_ENVS})
+    endif()
 endforeach(TEST_OP)
 
 set_tests_properties(test_se_resnet PROPERTIES TIMEOUT 900)