GBP Endpoint Updates

- common types on the API
- endpoints keyed in various ways for DP lookup
- conparison functions for VPP IP address types

Change-Id: If7ec0bbc5cea71fd0983fe78987d147ec1bd7ec8
Signed-off-by: Neale Ranns <neale.ranns@cisco.com>

test/test_ip_mcast.py

@@ -3,8 +3,9 @@
 import unittest
 
 from framework import VppTestCase, VppTestRunner
+from vpp_ip import DpoProto
 from vpp_ip_route import VppIpMRoute, VppMRoutePath, VppMFibSignal, \
-    MRouteItfFlags, MRouteEntryFlags, VppIpTable, DpoProto
+    MRouteItfFlags, MRouteEntryFlags, VppIpTable
 
 from scapy.packet import Raw
 from scapy.layers.l2 import Ether