try fixing travis ci build error, there config changed, or there mysql db version

Author: TheTechsTech

.travis.yml

@@ -19,11 +19,12 @@ before_script:
   - composer self-update 
   - composer require php-coveralls/php-coveralls
   - mysql -e 'CREATE DATABASE IF NOT EXISTS ez_test;'
-  - mysql -e 'GRANT ALL PRIVILEGES ON ez_test.* TO ez_test@localhost;'
-  - mysql -e "SET PASSWORD FOR 'ez_test'@'localhost' = PASSWORD('ezTest')"
+  - mysql -e "CREATE USER ez_test@localhost IDENTIFIED BY 'ezTest'; GRANT ALL ON ez_test.* TO ez_test@localhost; FLUSH PRIVILEGES;"
   - psql -c 'CREATE DATABASE ez_test;' -U postgres
   - psql -c "CREATE USER ez_test WITH PASSWORD 'ezTest';" -U postgres
-  
+#  - mysql -e 'GRANT ALL PRIVILEGES ON ez_test.* TO ez_test@localhost;'
+#  - mysql -e "SET PASSWORD FOR 'ez_test'@'localhost' = PASSWORD('ezTest')"
+
 after_success:
   - bash <(curl -s https://codecov.io/bash)
   - travis_retry php vendor/bin/php-coveralls