Fix Failing jruby mysql test

Author: mrpasquini

spec/adapters/jdbc_mysql_adapter_spec.rb

@@ -9,8 +9,8 @@
     subject(:adapter) { Apartment::Tenant.adapter }
 
     def tenant_names
-      ActiveRecord::Base.connection.execute('SELECT schema_name FROM information_schema.schemata').collect do |row|
-        row['schema_name']
+      ActiveRecord::Base.connection.execute('SELECT SCHEMA_NAME FROM information_schema.schemata').collect do |row|
+        row['SCHEMA_NAME']
       end
     end