udp: store mss and sw_if_index to udp_connection_t

Store mss and sw_if_index to udp_connection_t and display them via
show sessipn verbose 2

Type: fix

Signed-off-by: Steven Luong <sluong@cisco.com>
Change-Id: I32928f3f4195b178873dc1bada702e035d99c464
diff --git a/src/vnet/udp/udp_cli.c b/src/vnet/udp/udp_cli.c
index 3b7bb38..9787eed 100644
--- a/src/vnet/udp/udp_cli.c
+++ b/src/vnet/udp/udp_cli.c
@@ -67,11 +67,12 @@
 format_udp_vars (u8 * s, va_list * args)
 {
   udp_connection_t *uc = va_arg (*args, udp_connection_t *);
+
   s = format (s, " index %u flags: %U", uc->c_c_index,
 	      format_udp_connection_flags, uc);
-
   if (!(uc->flags & UDP_CONN_F_LISTEN))
-    s = format (s, "\n");
+    s = format (s, " \n sw_if_index: %d, mss: %u\n", uc->sw_if_index, uc->mss);
+
   return s;
 }