Added Puppet-Gluster documentation from Puppet-Gluster project.

Change-Id: I196d97fb446f5938671c4cde6c460334999679cf
Signed-off-by: James Shubin <james@shubin.ca>
Reviewed-on: http://review.gluster.org/6507
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Tested-by: Vijay Bellur <vbellur@redhat.com>