Move config.ini.travis.php to travis-scripts repo.

tests/PHPUnit/config.ini.travis.php

-; <?php exit; ?> DO NOT REMOVE THIS LINE
-; This configuration is used for automatic integration
-; tests on Travis-CI. Do not use this in production.
-
-[database]
-host = 127.0.0.1
-username = root
-password =
-dbname = piwik_tests
-adapter = PDO\MYSQL
-; no table prefix for tests on travis
-tables_prefix =
-;charset = utf8
-
-[tests]
-request_uri = "/"
-port = 3000
-
-[database_tests]
-host = 127.0.0.1
-username = root
-password =
-dbname = piwik_tests
-adapter = PDO\MYSQL
-; no table prefix for tests on travis
-tables_prefix =
-
-[log]
-log_writers[] = file
-log_level = info
-
-; leave this empty here
-[General]