COOK-1974 set service init priority for chef-expander, chef-solr and …

…chef-server

This makes sure these services start before chef-client service.
That way after a server reboot the /var/run/chef directory will be
created with chef:chef ownership allowing chef-solr to start correctly.

recipes/rubygems-install.rb

@@ -218,6 +218,9 @@
     service svc do
       supports :status => true
       action [ :enable, :start ]
+      if platform_family?("debian")
+        priority("2 3 4 5" => [ "start", "19" ], "0 1 6" => [ "stop", "81" ])
+      end
     end
   end