ip: add VNET_IP_TABLE_ADD_DEL_FUNCTION

vrf table may be dynamically added or deleted. When the table is deleted,
clients who use the corresponding vrf table may need a callback to
do the clean up. The mechanism added here is cloned from
VNET_SW_INTERFACE_ADD_DEL_FUNCTION.

Type: improvement

Signed-off-by: Steven Luong <sluong@cisco.com>
Change-Id: I08635c715cd7361a6c359b90890dd3545b0da94c
diff --git a/src/vnet/CMakeLists.txt b/src/vnet/CMakeLists.txt
index e418218..7757301 100644
--- a/src/vnet/CMakeLists.txt
+++ b/src/vnet/CMakeLists.txt
@@ -489,6 +489,7 @@
   ip/ip6_hop_by_hop_packet.h
   ip/ip6_packet.h
   ip/ip.h
+  ip/ip_table.h
   ip/ip_interface.h
   ip/ip_packet.h
   ip/ip_source_and_port_range_check.h