Packaging maintenance

* Declare compliance with policy 4.3.0
* Add a missing patch header

debian/control

@@ -1,7 +1,7 @@
 Source: tcpreplay
 Maintainer: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
 Homepage: http://tcpreplay.appneta.com/
-Standards-Version: 3.9.8
+Standards-Version: 4.3.0
 Build-Depends: debhelper (>= 10~),
     autogen,
     libpcap0.8-dev,

debian/patches/disable-tcpreplay-test.patch

@@ -1,6 +1,7 @@
 Subject: Disable the tcpreplay tests as the require root privileges
 Author: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
 Forwarded: not-needed
+Last-Update: 2017-04-26
 
 --- a/test/Makefile.am
 +++ b/test/Makefile.am