add resource group import function in Data Integration Hub

There is no resource group import function in Data Integration Hub. If the resource group are more than 100 group. Support resource group function in Hub will be good.

This function can import two types of resource group (Directly schedulable and NON-Directly schedulable)

for Directly schedulable: the Dummy resource(same code and name with its linked resource group) for schedulable.(it's means user only mark the resource group is Directly schedulable in import file. the import function can creat same code and name and link to its resource group.

for NON-Directly schedulable: no need to create dummy resource linke with this resource group.

希望在Data Integration Hub中增加资源组的导入功能，

由于BEAS的资源组分直接排程和非直接排程两种。

对直接排程：希望主要用户在导入的数据的某个字段标识这是个直接排程资源组，导入可以自动产生一个dummy的资源和这个资源组连接。（这个dummy的资源是BEAS系统要求的，用于资源组参加排程的）；

对非直接排程：不需要产生dummy资源与之对应。直接提供导入即可。