LU-17275 kernel: RHEL 8.9 client support

LU-17275 kernel: RHEL 8.9 client support

This patch makes changes to support RHEL 8.9 release
with kernel 4.18.0-513.5.1.el8_9 for Lustre client.

Lustre-change: https://review.whamcloud.com/53071
Lustre-commit: TBD (from 0da16c715a06b6426a6b99c111147fc875784e85)

Test-Parameters: trivial mdtcount=4 mdscount=2 \
clientdistro=el8.9 serverdistro=el8.8 testlist=sanity

Test-Parameters: optional clientdistro=el8.9 serverdistro=el8.8 \
testgroup=full-part-1

Test-Parameters: optional clientdistro=el8.9 serverdistro=el8.8 \
testgroup=full-part-2

Test-Parameters: optional clientdistro=el8.9 serverdistro=el8.8 \
testgroup=full-part-3

Change-Id: Ia3672d134534b877bb6aaffb4cea0339bc55974f
Signed-off-by: Jian Yu <yujian@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/c/ex/lustre-release/+/53089
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>