interface: Add interface monitor cli

This adds an interface CLI 'monitor
interface <interface>' that periodically
reports rx/tx pps & bandwidth for a
given interface.

Type: feature

Change-Id: Ia9d59b3443913520a52b38d7bda012190be6f167
Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
diff --git a/src/vnet/CMakeLists.txt b/src/vnet/CMakeLists.txt
index 5dd7cdb..a8b13b6 100644
--- a/src/vnet/CMakeLists.txt
+++ b/src/vnet/CMakeLists.txt
@@ -38,6 +38,7 @@
   interface/rx_queue.c
   interface/tx_queue.c
   interface/runtime.c
+  interface/monitor.c
   interface_stats.c
   misc.c
 )