Merge pull request #260 from shaofengshi/inverted-index

Update mini cluster test for query combination test
Merge pull request #261 from shaofengshi/inverted-index

Set jvm heap config for mvn test in pom.xml
refactor fact table generator, continue ii test case fixing
move fact table generator location
cleaning the @ignore in codes
add buildCubeUsingProvidedData option for buildcubewithenginetest
Refactor mini cluster test case
fix compile issue
Merge with mahong’s update.
Merge branch 'inverted-index' of https://github.com/KylinOLAP/Kylin into inverted-index
Update test case.