Revert "add VfilePatternEx to apt-cacher-ng for centos."
Revert "add VfilePatternEx to apt-cacher-ng for centos."

This reverts commit 95ac11e15cc4daf7cdc6e31e55e0fa3df2ac35ca.

Change-Id: I56d51b1bcd0a327b11df15b08b5a160db4974011
Closes-Bug: #1633936

openstack/openstack-ansible-repo_server,openstack/openstack-ansible-repo_server