gluster: open ports 8080 and 38469

Port 8080 (for gluster swift service) and 38469 (for NFS's ACL
support) need to be opened in iptables for volume access.

Change-Id: Idc1269d096646b9ddd42f39b3644f74335cac2fa
Signed-off-by: Bala.FA <barumuga@redhat.com>