ndn-traffic-generator: Update for ndn-cxx 0.5.1

Change-Id: Ic5be762b0012ccf7750abf8754835bd83b996597
diff --git a/ndn-traffic-generator/Makefile b/ndn-traffic-generator/Makefile
index 8fcd984..e5ad1e8 100644
--- a/ndn-traffic-generator/Makefile
+++ b/ndn-traffic-generator/Makefile
@@ -8,9 +8,9 @@
 NAME=ndn-traffic-generator
 
 # Package version
-VERSION=0.0.6-g6f33e0
+VERSION=0.0.6-g6f33e
 
 # PPA version
-PPA_VERSION=2
+PPA_VERSION=4
 
 include ../packaging.mk