LU-16650 kernel: update RHEL 7.9 [3.10.0-1160.88.1.el7]

LU-16650 kernel: update RHEL 7.9 [3.10.0-1160.88.1.el7]

Update RHEL 7.9 kernel to 3.10.0-1160.88.1.el7.

Lustre-change: https://review.whamcloud.com/50553
Lustre-commit: bd0d79456b91db58a75eeb717c7805d78d8a9a1a

Test-Parameters: trivial clientdistro=el7.9 serverdistro=el7.9

Change-Id: I4119595943940cca94d1853b59c94a02fed8cb71
Signed-off-by: Jian Yu <yujian@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/50556
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Yang Sheng <ys@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>