Fix controller for ptcp manager

Fix controller for ptcp manager

If a ptcp manager is set on OVS, we configure
controller through conneciton info. There are two
issues with this code today:

1. Doesn't work well for IPv6.
2. Doesn't check if connection is to same port
   as configured in ptcp manager.

So we end up with an improper controller configured
basde on ptcp even if we already configured correct
ones from manager entries.

JIRA: OVSDB-475

Change-Id: Ic69be0a9a6f2fd96085b60cdc3ccb9f1022b54a8
Signed-off-by: Vishal Thapar <vthapar@redhat.com>