Merge pull request #540 from kardapoltsev/wip/daemonUser_systemd

test added for daemon user in systemd #436

src/sbt-test/debian/systemd-deb/build.sbt

@@ -17,9 +17,12 @@ packageDescription := """A fun package description of our software,
 
 requiredStartFacilities in Debian := Some("network.target")
 
+daemonUser in Linux := "testuser"
+
 TaskKey[Unit]("check-startup-script") <<= (target, streams) map { (target, out) =>
   val script = IO.read(target / "debian-test-0.1.0" / "usr" / "lib" / "systemd" / "system" / "debian-test.service")
   assert(script.contains("Requires=network.target"), "script doesn't contain Default-Start header\n" + script)
+  assert(script.contains("User=testuser"), "script doesn't contain `User` header\n" + script)
   out.log.success("Successfully tested systemd start up script")
   ()
 }