ndn-tools: Update to the latest version

Change-Id: I3162709e9d7e7d613858f41d2f6b30d1739674ad
diff --git a/ndn-tools/debian/control b/ndn-tools/debian/control
index 46a5504..d8b72cd 100644
--- a/ndn-tools/debian/control
+++ b/ndn-tools/debian/control
@@ -3,11 +3,11 @@
 Maintainer: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
 Build-Depends: debhelper (>= 8.0.0),
  dh-systemd (>= 1.5),
- python (>= 2.7.0),
+ python3 (>= 3.5.0),
  pkg-config (>= 0.26),
  libpcap-dev,
- python-sphinx,
- libndn-cxx-dev (>= 0.7.0),
+ python3-sphinx,
+ libndn-cxx-dev (>= 0.7.1),
  git
 Standards-Version: 3.9.2
 Section: net