NAC, ndn-traffic-generator, ndncert, repo-ng: Update to the latest versions

Change-Id: I41dedf689e1c4060021c6a01e86bf3f652e96dbe
diff --git a/repo-ng/debian/control b/repo-ng/debian/control
index 3a129ec..61500fb 100644
--- a/repo-ng/debian/control
+++ b/repo-ng/debian/control
@@ -6,7 +6,7 @@
  python3 (>= 3.6.0),
  pkg-config (>= 0.29),
  libboost-all-dev (>= 1.65.1),
- libndn-cxx-dev (>= 0.8.0),
+ libndn-cxx-dev (>= 0.8.1),
  libsqlite3-dev (>= 3.22.0)
 Standards-Version: 3.9.2
 Homepage: https://github.com/named-data/repo-ng