replace DB_SRV with the hostname/ip and not the caption of the mysql-server, thx to rzeka for noticing

Signed-off-by: Michael Kaufmann (d00p) <d00p@froxlor.org>

customer_mysql.php

@@ -219,7 +219,7 @@ if ($page == 'overview') {
 							'DB_NAME' => $username,
 							'DB_PASS' => $password,
 							'DB_DESC' => $databasedescription,
-							'DB_SRV' => $sql_root['caption'],
+							'DB_SRV' => $sql_root['host'],
 							'PMA_URI' => $pma
 						);