Packaging cleanup

* Declare compliance with policy 4.7.0
* Drop lsb-base in favour of (essential) sysvinit-utils
* Rename systemd tmpfile

debian/control

@@ -1,7 +1,7 @@
 Source: softflowd
 Maintainer: Christoph Biedl <debian.axhn@manchmal.in-ulm.de>
 Homepage: https://github.com/irino/softflowd
-Standards-Version: 4.6.1
+Standards-Version: 4.7.0
 Vcs-Browser: https://git.in-ulm.de/cbiedl/softflowd
 Vcs-Git: https://git.in-ulm.de/cbiedl/softflowd.git
 Build-Depends: debhelper-compat (= 13),
@@ -14,7 +14,6 @@ Package: softflowd
 Architecture: any
 Pre-Depends: ${misc:Pre-Depends},
 Depends: ${misc:Depends}, ${shlibs:Depends},
-    lsb-base,
     netbase,
 Description: Flow-based network traffic analyser
  Softflowd is a flow-based network traffic anaylser capable of Cisco