anolis: Kconfig: Disable group identity by default

ANBZ: torvalds#271

As group identity modified some logics of the mainline, the performence
will degrade if the task is not in mixed deployment scenario. In order
to avoid unnecessary overhead, group identity will be disabled by default.

Signed-off-by: Cruz Zhao <CruzZhao@linux.alibaba.com>
Reviewed-by: Shile Zhang <shile.zhang@linux.alibaba.com>
Acked-by: Michael Wang <yun.wang@linux.alibaba.com>

init/Kconfig

@@ -802,7 +802,7 @@ config FAIR_GROUP_SCHED
 config GROUP_IDENTITY
 	bool "Group identity for SCHED_OTHER"
 	depends on (CGROUP_SCHED && 64BIT && SMP)
-	default CGROUP_SCHED
+	default n
 	help
 	  This feature introduced identity for cgroup, including:
 	    ID_NORMAL