The controller is managed via Netsight Console BUT as the APs are not real devices (at least not in Netsight Console) you'd need to configure CLI access from Netsight to the controller.
Netsight will ssh to the controller to pull the AP status information.
I've tried it in my lab, if I use a wrong password in my CLI profile OneView will not show the AP status/count.
So follow the instructions to make sure Netsight could access the controller via ssh..
https://community.extremenetworks.com/extreme/topics/using_netsight_5_to_manage_wireless_controllers
-Ron