Standardize mysql.configuration-provider

Summary: NOTE: BC break!

Test Plan: /

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, nh

Differential Revision: https://secure.phabricator.com/D2130

scripts/sql/upgrade_schema.php

@@ -61,7 +61,7 @@ if (empty($options['f']) && empty($options['d'])) {
 $next_version = isset($options['v']) ? (int)$options['v'] : null;
 $max_version = isset($options['m']) ? (int)$options['m'] : null;
 
-$conf = DatabaseConfigurationProvider::getConfiguration();
+$conf = PhabricatorEnv::newObjectFromConfig('mysql.configuration-provider');
 
 if ($options['u']) {
   $conn_user = $options['u'];