add L1HingeEmbeddingCriterion unit test for python (#1073)
add L1HingeEmbeddingCriterion unit test for python (#1073)


yangw1234/BigDL,yangw1234/BigDL,yangw1234/BigDL,intel-analytics/BigDL,intel-analytics/BigDL,intel-analytics/BigDL,yangw1234/BigDL,intel-analytics/BigDL