LU-18684 config: don't run kernel checks with modules disabled

LU-18684 config: don't run kernel checks with modules disabled

Running:

configure --enable-client --disable-server --disable-modules

runs kernel checks. They should only ever be run with modules enabled.

Fixes: a13fc434c57f ("LU-17662 osd-zfs: Support for ZFS 2.2.3")
Signed-off-by: Ake Sandgren <ake.sandgren@hpc2n.umu.se>
Change-Id: I97277474e1db554c23bf2fa3f80ac3a5b745bded
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/57921
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Timothy Day <timday@amazon.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>