LU-11401 tests: add version check sanity-flr tests

sanity-flr test 48 and 203 was added to Lustre tag 2.11.55.
Thus, we need to check that the server version is 2.11.55 or
later before running test 48 and 203.

sanity-flr test 0h checks for a file inheriting the directory
layout. sanity-flr test 37 added ‘lfs mirror write’ functionality.
Inheritance was fixed and ‘lfs mirror write’ was added in Lustre
tag 2.11.57. Thus, we need to check that the server version is
2.11.57 or later before running test 0h and 37.

Test-Parameters: trivial testlist=sanity-flr
Test-Parameters: serverjob=lustre-b2_11 serverbuildno=2 testlist=sanity-flr
Signed-off-by: James Nunez <jnunez@whamcloud.com>
Change-Id: I94c68e900d60e2b97d7f74c6629ee54bcb3a5480
Reviewed-on: https://review.whamcloud.com/33955
Tested-by: Jenkins
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Wei Liu <sarah@whamcloud.com>
Reviewed-by: Emoly Liu <emoly@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>