Misc fixes for impish builds

Change-Id: I68825a35c250a76c2293430271f6536d212fba3b
diff --git a/ndns/debian/control b/ndns/debian/control
index 280fd93..2d2dde6 100644
--- a/ndns/debian/control
+++ b/ndns/debian/control
@@ -1,12 +1,11 @@
 Source: ndns
 Priority: extra
 Maintainer: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
-Build-Depends: debhelper (>= 8.0.0),
- dh-systemd (>= 1.5),
+Build-Depends: debhelper (>= 9.20160709),
  python (>= 2.7.0),
  pkg-config (>= 0.26),
  libndn-cxx-dev (>= 0.8.0)
-Standards-Version: 3.9.2
+Standards-Version: 4.5.0
 Section: net
 Homepage: http://github.com/named-data/ndns
 Vcs-Git: git://github.com/named-data/ndns.git