Add startname to systemd server

Signed-off-by: Mendy Baitelman <mendy@baitelman.com>

lib/inspec/resources/service.rb

@@ -304,10 +304,12 @@ module Inspec::Resources
 
       # LoadState values eg. loaded, not-found
       installed = params["LoadState"] == "loaded"
+      startname = params["User"] != "" : params["User"]; nil
 
       {
         name: params["Id"],
         description: params["Description"],
+        startname: startname,
         installed: installed,
         running: is_active?(service_name),
         enabled: is_enabled?(service_name),

test/unit/mock/cmd/systemctl-show-all-apache2

@@ -5,3 +5,4 @@ LoadState=loaded
 UnitFileState=
 SubState=running
 ActiveState=active
+User=root

test/unit/resources/service_test.rb

@@ -359,6 +359,7 @@ describe "Inspec::Resources::Service" do
     _(resource.type).must_equal "systemd"
     _(resource.name).must_equal "apache2.service"
     _(resource.description).must_equal "LSB: Apache2 web server"
+    _(resource.startname).must_equal "root"
     _(resource.installed?).must_equal true
     _(resource.enabled?).must_equal true
     _(resource.running?).must_equal true