Ensure password_file is nil if username is nil
Ensure password_file is nil if username is nil

hopshadoop/chef-glassfish,predictivelogic/chef-glassfish,predictivelogic/chef-glassfish,predictivelogic/chef-glassfish,hopshadoop/chef-glassfish,hopshadoop/chef-glassfish,realityforge/chef-glassfish,realityforge/chef-glassfish,realityforge/chef-glassfish