LU-16657 build: don't need to use zfs kmodtool on RHEL9.1

LU-16657 build: don't need to use zfs kmodtool on RHEL9.1

Test-Parameters: trivial fstype=zfs \
clientdistro=el9.1 serverdistro=el9.1 testlist=sanity

Test-Parameters: trivial fstype=zfs \
clientdistro=el8.7 serverdistro=el8.7 testlist=sanity

Test-Parameters: trivial fstype=ldiskfs \
clientdistro=el9.1 serverdistro=el9.1 testlist=sanity

Test-Parameters: trivial fstype=ldiskfs \
clientdistro=el8.7 serverdistro=el8.7 testlist=sanity

Change-Id: I11ca6a01cb9ddc6e59bf91e1bee35a3ceccb725a
Signed-off-by: Minh Diep <mdiep@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/50746
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: Alex Deiter <alex.deiter@gmail.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>