LU-10977 test: add version check to sanity test_60ab

LU-10977 test: add version check to sanity test_60ab

Skip sanity.sh test_60ab if server is equal or
less than 2.11.51

Test-Parameters:trivial testlist=sanity envdefinitions=ONLY=60ab serverjob=lustre-b2_10 serverbuildno=69
Signed-off-by: Saurabh Tandan <saurabh.tandan@intel.com>
Change-Id: Ie9d2728790e19ac2a24c94e7c13ade28b5a5bbbe
Reviewed-on: https://review.whamcloud.com/32343
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: James Nunez <james.a.nunez@intel.com>
Reviewed-by: Wei Liu <wei3.liu@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>