LU-17366 kernel: update SLES15 SP5 [5.14.21-150500.55.39.1]

LU-17366 kernel: update SLES15 SP5 [5.14.21-150500.55.39.1]

Update SLES15 SP5 kernel to 5.14.21-150500.55.39.1 for Lustre client.

Lustre-change: https://review.whamcloud.com/53467
Lustre-commit: TBD (from 7084f80ec256f6a7335fe4d5981db1e8bcbed440)

Test-Parameters: trivial mdtcount=4 mdscount=2 \
clientdistro=sles15sp5 testlist=sanity

Change-Id: Id9476e8726728b00d4079cdaf31b081f89190eb1
Signed-off-by: Jian Yu <yujian@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/53468
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>