开启独立分组

开启独立分组，TP3.1.2开始支持的分组功能。
与原来的普通分组区别。
Revert "开启独立分组"

This reverts commit 343b088d8e6928203d8e0092bfbe8fc86a752943.
Revert "Revert "开启独立分组""

This reverts commit 4e4e3fab77108bf01501e9ac35bb4dfc0be56970.