LU-16221 build: modify kmodtool for rhel9

LU-16221 build: modify kmodtool for rhel9

Customized kmodtool to use our lbuild location

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

Change-Id: I0573db09fa33a77d93d052fa12d5b07300d7eff6
Signed-off-by: Minh Diep <mdiep@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/50865
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Alex Deiter <alex.deiter@gmail.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>