LU-5465 scripts: handle added [spl,zfs]-dkms case

LU-5465 scripts: handle added [spl,zfs]-dkms case

Get SPL/ZFS version also when [spl,zfs]-dkms RPMs have only
been added in DKMS framework and terminology.

Signed-off-by: Bruno Faccini <bruno.faccini@intel.com>
Change-Id: I70f339331d6b759fc3c120d8a07cb2f98ccaa148
Reviewed-on: http://review.whamcloud.com/11381
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Minh Diep <minh.diep@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>