Signed-off-by: zhupuxu <zhupuxu@huawei.com>

From: @dimitri_rose
Reviewed-by: @tangqunzhang,@ji_chen,@wqtshg
Signed-off-by: @ji_chen

From: @hugo1
Reviewed-by: 
Signed-off-by:

modified:   ge/graph/load/model_manager/model_manager.cc
	modified:   ge/host_kernels/identity_kernel.cc
	modified:   ge/hybrid/model/hybrid_model.h
	modified:   ge/hybrid/model/hybrid_model_builder.cc
	modified:   ge/hybrid/node_executor/task_context.cc

From: @zhou_chao1993
Reviewed-by: @youui
Signed-off-by:

From: @lichun30
Reviewed-by: 
Signed-off-by:

modified:   ge/graph/preprocess/graph_preprocess.cc
	modified:   tests/ut/ge/CMakeLists.txt
	modified:   tests/ut/ge/graph/load/new_model_manager_model_manager_unittest.cc
	new file:   tests/ut/ge/graph/preprocess/graph_preprocess_unittest.cc