servers = [
   {"release_server"=>
      {
         "name"=>"foo",
      }
   },
   {"release_server"=>
      {
         "name"=>"bar",


      }
   }
]

## return the only the hash that has the value ['release_server']['name'] == "foo"
pp servers.find{|release| release['release_server']['name'] == "foo" }

## outputs "release_server"=>
#      {
#         "name"=>"foo",
#      }
#   }