Fix spl-kmod builds when using rpm >= 4.14

Fix spl-kmod builds when using rpm >= 4.14

With rpm-software-management/rpm@5e94633 a package version containing
invalid characters (most commonly a double '-') causes the kmod package
generation to terminate with an error.  This change takes advantage of
the newly introduced rpm macro "_wrong_version_format_terminate_build"
to allow kmod packages to be built.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by:  loli10K <ezomori.nozomu@gmail.com>
Closes #691