LU-3554 test: Don't run Sanity 233 on less than 2.4 servers

LU-3554 test:  Don't run Sanity 233 on less than 2.4 servers

2.4 clients 2.3 server interop testing showed that sanity.sh
test 233 needs to be skipped for older servers.

Add a check for MDS server code that it is greater than 2.3.64

Signed-off-by: Keith Mannthey <keith.mannthey@intel.com>
Change-Id: I3f96b8017c40a95d246061a8a52db8822c172eca
Reviewed-on: http://review.whamcloud.com/7324
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Minh Diep <minh.diep@intel.com>
Reviewed-by: Jian Yu <jian.yu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>