Major Description
If edit the sample cube and then click save, a NPE will be thrown and block user to move ahead.
The root cause is In CubeController it uses the cube_des name as the cube name to load cube instance; Usually for the cubes that created from Kylin's UI, the desc name = cube name, so it has no problem. But for the sample "kylin_sales_cube", its name != cube desc name. This is a bug, need to use the accurate cube name there.