fix op in debug mode

[dzhwinter]

Currently, our CI system only tests our code in Cmake Release mode, it will remove some asserts which may be failed in debug mode. E.g. eigen tensor shape asserts will be removed in Release mode, so we need to test the project in debug mode locally.

cmake .. -DCMAKE_BUILD_TYPE=Debug 

• seq_pool
• matmul_op
• l1_norm_op Fix l1_norm_op and squared_l2_norm_op for debug mode #5560
• cos_sim_op
• gru_op
• elementwise_mul_op
• squared_l2_norm_op Fix l1_norm_op and squared_l2_norm_op for debug mode #5560
• reduce_op Fix/reduce op #5565

The following tests FAILED:
	149 - test_seq_pool (OTHER_FAULT)
	151 - test_matmul_op (OTHER_FAULT)
	153 - test_l1_norm_op (OTHER_FAULT)
	158 - test_cos_sim_op (OTHER_FAULT)
	173 - test_gru_op (OTHER_FAULT)
	192 - test_elementwise_mul_op (OTHER_FAULT)
	220 - test_recognize_digits_conv (Failed)
	255 - test_reduce_op (OTHER_FAULT)
	262 - test_squared_l2_norm_op (OTHER_FAULT)

[qingqing01]

@dzhwinter Thanks, I'll help to fix these operators.