add uuid and create time for CubeSegment for future use and debug
Merge branch 'master' into staging

Conflicts:
	server/src/main/java/com/kylinolap/rest/service/JobService.java
Merge branch 'staging' of https://github.com/KylinOLAP/Kylin into staging
Merge branch 'staging' of https://github.com/KylinOLAP/Kylin into staging
fix CI issue
Merge pull request #117 from qhzhou/staging

fix BuildCubeWithEngineTest issues