LU-17018 build: add 'linux-image-generic' as Depends

LU-17018 build: add 'linux-image-generic' as Depends

Add 'linux-image-generic >= 3.10' as a dependency for Debian dkms
package for Ubuntu support

Test-Parameters: trivial
Fixes: 621e0bc2f9 ("LU-16661 build: improve lustre.spec.in Requires")
Signed-off-by: Raphael Druon <rdruon@ddn.com>
Change-Id: Ie8bacbd55c379632d5554de8d72606c818c1771e
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/51879
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>