LACP upgrade - 5: updating aggregator port state update handler

Updated #aggregator #port #status #handler in #LACP module. The data structure has been updated to use the new updated structure. This routine #updates the aggregator status as part of the #administrative or #operational #changes. The #LAG module uses this to #convey the aggregator #status #change to LACP module. When the aggregator port status changes to DOWN current aggregator selection is marked to be cleared. The remote information is marked as expired. This will cause the remote peer information to be gathered fresh again on port UP change. When port state comes as UP, the peer synchronization is marked as lost and expired and a timer is set to start operation on this port again.

#LACP update 18 ...
[commit 8eb97ea8c7dfb9c391f358e309df5bdc1f86b976] (https://github.com/nes-repo/NES-Open-Switch/commit/8eb97ea8c7dfb9c391f358e309df5bdc1f86b976)