Merge pull request #5 from phemmer/systemd-dependencies

export: fix systemd dependencies

data/export/systemd/master.target.erb

@@ -1 +1,6 @@
 [Unit]
+StopWhenUnneeded=true
+Wants=<%= process_master_names.join(' ') %>
+
+[Install]
+WantedBy=multi-user.target

data/export/systemd/process.service.erb

@@ -13,6 +13,3 @@ StandardOutput=syslog
 StandardError=syslog
 SyslogIdentifier=%n
 KillMode=process
-
-[Install]
-WantedBy=<%= app %>-<%= name %>.target

data/export/systemd/process_master.target.erb

@@ -1,5 +1,3 @@
 [Unit]
 StopWhenUnneeded=true
-
+Wants=<%= process_names.join(' ') %>
-[Install]
-WantedBy=<%= app %>.target

lib/foreman/export/systemd.rb

@@ -10,16 +10,23 @@ class Foreman::Export::Systemd < Foreman::Export::Base
       clean file
     end
 
-    write_template "systemd/master.target.erb", "#{app}.target", binding
+    process_master_names = []
 
     engine.each_process do |name, process|
       next if engine.formation[name] < 1
-      write_template "systemd/process_master.target.erb", "#{app}-#{name}.target", binding
+
+      process_names = []
 
       1.upto(engine.formation[name]) do |num|
         port = engine.port_for(process, num)
         write_template "systemd/process.service.erb", "#{app}-#{name}-#{num}.service", binding
-      end
+        process_names << "#{app}-#{name}-#{num}.service"
-    end
+      end
+
+      write_template "systemd/process_master.target.erb", "#{app}-#{name}.target", binding
+      process_master_names << "#{app}-#{name}.target"
+    end
+
+    write_template "systemd/master.target.erb", "#{app}.target", binding
   end
 end