LU-16101 tests: add sanity/27J to always_except

LU-16101 tests: add sanity/27J to always_except

This patch adds sanity/27J to always_except for SLES15 SP4
and 5.16.0+ kernels before the issue introduced by upstream
commit 8c8387ee3f55
("mm: stop filemap_read() from grabbing a superfluous page")
is resolved.

Test-Parameters: trivial clientdistro=sles15sp4 testlist=sanity

Signed-off-by: Jian Yu <yujian@whamcloud.com>
Change-Id: Iafde656530fcdc1de9265aacaa9266435c9d5c47
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/49970
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Xing Huang <hxing@ddn.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>