Add missing ComposerVendorHtaccessCreator class to autoload.php

Change-Id: Ia70324acf3db2df50c6629d705c2c4728c38aaaa
Follow-up: I2cf6541750c90b5708d7cf5f81b914ae2d9d46d1
(cherry picked from commit d1442d72f8b8b672636bb130a61b443ceab5b7c0)
1 file changed