LU-10364 test: Add version check to test_255b

LU-10364 test: Add version check to test_255b

Skip test if server version is older than 2.8.54 since
it does not support ladvise.

Lustre-change: https://review.whamcloud.com/30481
Lustre-commit: 043f5976d087a87bace840653c99e10cde13bb6d

Change-Id: Ie613c1b8d9d082b78529a3d72fd59150431f65ea
Test-Parameters: trivial
Signed-off-by: Wei Liu <wei3.liu@intel.com>
Reviewed-by: James Nunez <james.a.nunez@intel.com>
Reviewed-by: Saurabh Tandan <saurabh.tandan@intel.com>
Signed-off-by: Minh Diep <minh.diep@intel.com>
Reviewed-on: https://review.whamcloud.com/32002
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>