Classifier app currently sends the packet directly to portsec
app. This is Bad. As described in the bug, metadata stored in
registers can be lost.
This change adds a classifier exitpoint table, and classifier
app sends the packets there. The datapath wiring then sends
the packet to the portsec app (if so configured).
This is important, since sometimes the datapath code allocates different
registers to the same metadata accross different applications, and registers
are moved. Skipping this behaviour causes errors.
Closes-Bug: #1815416
Change-Id: I38f14e8faa45e4ef3740bdbee78bd493f6d602ab
8976a2cf9e