support session_config in estimator and refine evalute (#2665)
support session_config in estimator and refine evalute (#2665)


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