adding an option to mount.glusterfs for server failover to fetch volume files.
adding an option to mount.glusterfs for server failover to fetch volume files.

With this option, 'single point of failure', in case of volfile server can be
avoided

Thanks to Cory Meyer <cory.meyer@gmail.com>

Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 185 (Request to support secondary volfile-server option in mount.glusterfs)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=185

Kaushikbv/Gluster,Kaushikbv/Gluster,Kaushikbv/Gluster