openolt adapter changes for FTTB Subscriber Traffic flows

As the techprofile IDs will be different for all the subscribers in a DPU.

• Adapter should be able to handle multiple techprofiles per ONU.
• with multiple subscriber the adapter along with the OLT should be able to configure multiple DBA schedulers on upstream and schedulers on the downstream.
• The pbit and priority map is given below in the table and the queues should be configured accordingly with SP as scheduling type.
• On every techprofile instance creation , the same is to be informed to the ONU adapter via techprofile download request.
• On recieveing the flows, for upstream direction the traffic recieved is to be classified with the ANP VLAN set as the classifier in the flow and the action is to replace it with the subscriber VLAN present in the action filed of the flow.
• On downstream direction, the traffic received has to be classified with the subscriber VLAN as specified in the flow and replace with ANP VLAN specified  in the action field of the flow.

P-bit mapping