LU-15126 kernel: RHEL 8.5 server support

LU-15126 kernel: RHEL 8.5 server support

This patch makes changes to support RHEL 8.5 release
with kernel 4.18.0-348.2.1.el8_5 for Lustre server.

Test-Parameters: trivial fstype=ldiskfs \
env=SANITY_EXCEPT="101j" \
clientdistro=el8.5 serverdistro=el8.5 testlist=sanity

Test-Parameters: trivial fstype=zfs \
env=SANITY_EXCEPT="101j" \
clientdistro=el8.5 serverdistro=el8.5 testlist=sanity

Change-Id: Ie976d8fd3e6fcf8a564eff8a41ad0fd51b2c858c
Signed-off-by: Jian Yu <yujian@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/45306
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Yang Sheng <ys@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>