[CLIENT] Skip test using Patron adapter for Faraday on JRuby

Author: karmi

elasticsearch-transport/test/unit/client_test.rb

@@ -208,7 +208,7 @@ def initialize(*); end
         handlers = c.transport.connections.all.first.connection.builder.handlers
 
         assert_includes handlers, Faraday::Adapter::Patron
-      end
+      end unless JRUBY
     end
 
   end