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_qos.py

@@ -5,8 +5,9 @@ import unittest
 from framework import VppTestCase, VppTestRunner
 from vpp_papi_provider import QOS_SOURCE
 from vpp_sub_interface import VppDot1QSubint
+from vpp_ip import DpoProto
 from vpp_ip_route import VppIpRoute, VppRoutePath, VppMplsRoute, \
-    VppMplsLabel, VppMplsTable, DpoProto
+    VppMplsLabel, VppMplsTable
 
 from scapy.packet import Raw
 from scapy.layers.l2 import Ether, Dot1Q