flip version to 0.13-snapshot (#3074)
flip version to 0.13-snapshot (#3074)

* flip version to 0.13-snapshot
intel-analytics/BigDL,yangw1234/BigDL,yangw1234/BigDL,yangw1234/BigDL,intel-analytics/BigDL,intel-analytics/BigDL,intel-analytics/BigDL,yangw1234/BigDL