ipsec: remove dedicated IPSec tunnels

APIs for dedicated IPSec tunnels will remain in this release and are
used to programme the IPIP tunnel protect. APIs will be removed in a
future release.

see:
 https://wiki.fd.io/view/VPP/IPSec

Type: feature

Change-Id: I0f01f597946fdd15dfa5cae3643104d5a9c83089
Signed-off-by: Neale Ranns <nranns@cisco.com>

test/vpp_gre_interface.py

@@ -48,3 +48,11 @@ class VppGreInterface(VppInterface):
     def query_vpp_config(self):
         return (self.test.vapi.gre_tunnel_dump(
             sw_if_index=self._sw_if_index))
+
+    @property
+    def remote_ip(self):
+        return self.t_dst
+
+    @property
+    def local_ip(self):
+        return self.t_src