fix wrong database-usage in DbManagerMySQL::grantCreateToCustomerDbs() when using more than 1 mysql-server; refs #1312

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

lib/Froxlor/Database/Database.php

@@ -377,6 +377,14 @@ class Database
 		self::$link = null;
 	}
 
+	/**
+	 * get the currently used database-server (relevant for root-connection)
+	 */
+	public static function getServer()
+	{
+		return self::$dbserver;
+	}
+
 	/**
 	 * enable the temporary access to sql-access data
 	 * note: if you want root-sqldata you need to