LU-4341 tests: re-enable SLES sanity test_170 test_243

LU-4341 tests: re-enable SLES sanity test_170 test_243

Re-enable tests on SLES that has been disabled since SLES11.
The SLES version check was broken and these were already
running on SLES15 without issues.

Test-Parameters: trivial
Test-Parameters: testlist=sanity env=ONLY="170 243",ONLY_REPEAT=20 clientdistro=sles15sp5
Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Change-Id: I0f837ac5180d0754b67f349592503267aa2c5f52
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/54777
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Sarah Liu <sarah@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>