issue #51, add new default attribute file for v5.2.1
issue #51, add new default attribute file for v5.2.1

jcastaldoFoodEssentials/chef-solrcloud,vkhatri/chef-solrcloud,vkhatri/chef-solrcloud,jcastaldoFoodEssentials/chef-solrcloud,vkhatri/chef-solrcloud,vkhatri/chef-solrcloud,jcastaldoFoodEssentials/chef-solrcloud,jcastaldoFoodEssentials/chef-solrcloud