add MariaDB 10.0 environment to travis (#17460, #19344)

git-svn-id: http://svn.redmine.org/redmine/trunk@14077 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/tasks/ci.rake

@@ -56,7 +56,7 @@ file 'config/database.yml' do
   test_db_name = "ci_#{branch}_#{ruby}_test"
 
   case database
-  when 'mysql'
+  when /(mysql|mariadb)/
     dev_conf =  {'adapter' => 'mysql2',
                  'database' => dev_db_name, 'host' => 'localhost',
                  'encoding' => 'utf8'}