LU-16862 rpm: set kmod-lustre-tests requires kmod-lustre explicitly

LU-16862 rpm: set kmod-lustre-tests requires kmod-lustre explicitly

Kmod-lustre-tests rpm should be installed along with kmod-lustre rpm
if there is one.

Test-Parameters: trivial
Change-Id: Ib265298381c317a03c4244f8ea380c6d64f0aef5
Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org>
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/51191
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>