[VOL-3105] Fix NNI port no calculation for PortStatistics

- Bitshifting in interface_key_to_port_no method in translation.cc is corrected for NNI

Change-Id: Idc0499c43720b4c526e8ccac972c068bcdbf7529
diff --git a/VERSION b/VERSION
index e30309f..f041bc6 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.4.7
+2.4.8