Rebuild packages against the latest ndn-cxx

Update includes:
- ndn-traffic-generator
- ndncert
- ndnmap-data-collector
- repo-ng

Change-Id: I80695367282d182adbcc4ac6d1c00ce390be8f8e
diff --git a/ndn-traffic-generator/Makefile b/ndn-traffic-generator/Makefile
index 1e0b2e3..d7b3167 100644
--- a/ndn-traffic-generator/Makefile
+++ b/ndn-traffic-generator/Makefile
@@ -11,6 +11,6 @@
 VERSION=0.0.9-gee18cce1b
 
 # PPA version
-PPA_VERSION=3
+PPA_VERSION=4
 
 include ../packaging.mk