openolt adapter for FTTB DPU Mgmt and ANCP traffic flows

The openolt adapter needs to support the following features:

• The adtran adapter should be able to pick up the proper techprofile for MGMT/ANCP which of course comes as part of the MGMT/ANCP flow.
• Create the schedulers/Queues according to the techprofile, as of now it is 1 Tcont 1 Gem with 7 as pbit map.
• Create US flows with classifier as VID_NETWORK_ANCP/MGMT VLAN , ETH SRC MACaddress. The action on the packet would be to switch it to the NNI port.
• Create DS flows with classifier as VID_NETWORK_ANCP/MGMT vlan , ETHDST MAcaddress. The action on the packet is to forward it to the correct PON interface