Add ruby application service sample

applications/application-ruby-srv/run

@@ -0,0 +1,8 @@
+#!/bin/execlineb -P
+
+fdmove -c 2 1
+foreground { chown application:users supervise supervise/control event }
+s6-setuidgid application
+s6-envdir env
+cd /srv/httpd/application/ruby/current/
+rbenv exec bundle exec puma