gluster: Added ports in gluster iptables config

Ports required for GlusterFS brick processes have changed in
glusterfs 3.4.0 from 24009 onwards to 49152 onwards.

This patch adds these new ports in the IPTables configuration
for glusterfs. The old ones are also left open for backward
compatibility with older gluster servers.

Change-Id: I414bce7daaf473e25e0cf643f5bc4883bcda7085
Bug-Url: https://bugzilla.redhat.com/906314
Signed-off-by: Shireesh Anjal <sanjal@redhat.com>