BUG-1116: Finish up egress path API changes

This finishes the API-level changes required to support route
dissemination. The codepath should just work, but more testing is
needed.

Change-Id: I79ace174c78f0653b057b0bad1c685ecd5e9d0cb
Signed-off-by: Robert Varga <rovarga@cisco.com>
Signed-off-by: Milos Fabian <milfabia@cisco.com>
Merge "BUG-1116: Finish up egress path API changes"