commit 9da7d529fcd76fc160e13189382271031d66ce5b
author Saurav Das <saurav.das@opennetworking.org> Mon Mar 23 19:14:35 2020 -0700
committer Saurav Das <saurav.das@opennetworking.org> Tue Mar 24 15:09:30 2020 -0700
tree 484fa88f64d548d920d6a5e6903d622197c52882
parent a24917883fdb9fe627522538e4aa6e60ca7ae52f

VOL-2800 fix for missing DHCP flows on NNI port after OLT delete and recreation.

Sometimes the NNI port can be in disabled state when VOLTHA connects to ONOS.
Because the port exists but is disabled at this point, NNI flows will not get programmed.
Also the port will not be `added` later as it is already there.
So again NNI flows will not be programmed as there will be no PORT_ADDED message.
As a result, we must handle the PORT_UPDATED case for NNI ports as well.

Change-Id: Ie9a7fcbe91a8181c54fcfa3aa5ae5c26bc64bb0e