travis mysql compatibility workaround

Author: malteriesch

.travis.yml

@@ -13,7 +13,7 @@ before_script:
   - composer self-update
   - composer install --dev --prefer-source
   - mysql -e 'create database myapp_test;'
-  - mysql -e 'SET GLOBAL sql_mode = '';'
+  - mysql -e "SET GLOBAL sql_mode = '';"
   - sed -e 's/@MYSQL_TESTDB_HOST@/'localhost'/' -e 's/@MYSQL_TESTDB_NAME@/'myapp_test'/' -e 's/@MYSQL_TESTDB_USER@/'root'/' -e 's/@MYSQL_TESTDB_PASSWORD@/''/' tests/Functional/config.php.dist > tests/Functional/config.php