Merge branch 'lintian-fixes' into 'master'

Fix some issues reported by lintian

See merge request !14

debian/changelog

@@ -2,4 +2,4 @@ acmeserver (2.0) unstable; urgency=medium
 
   * Initial Release.
 
- -- Autistici/Inventati <debian@autistici.org>  Sat, 15 Jun 2018 09:23:40 +0000
+ -- Autistici/Inventati <debian@autistici.org>  Fri, 15 Jun 2018 09:23:40 +0000

debian/control

@@ -8,6 +8,6 @@ Standards-Version: 3.9.6
 Package: acmeserver
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}
+Built-Using: ${misc:Built-Using}
 Description: ACME server
  Automatically manages and renews public SSL certificates.
-

debian/rules

@@ -5,7 +5,7 @@ export DH_GOLANG_EXCLUDES = vendor
 
 
 %:
-	dh $@ --with systemd --with golang --buildsystem golang
+	dh $@ --with golang --buildsystem golang
 
 override_dh_auto_install:
 	dh_auto_install -- --no-source
@@ -15,4 +15,3 @@ override_dh_systemd_enable:
 
 override_dh_systemd_start:
 	dh_systemd_start --no-start
-