fix: preserve linux kmod signature in zfs-kmod rpm spec

This change provides rpm spec macros to sign the zfs and spl kmods as
the final step after the %install scriptlet. This is needed since the
find-debuginfo.sh script strips out debug symbols plus signatures.

Kernel module signing only occurs when the required files are present
as typically required in the Linux source tree:
- certs/signing_key.pem
- certs/signing_key.x509

The method for overriding the default __spec_install_post macro is
inspired by (and largely copied from) the Fedora kernel.spec.

Reviewed-by: Tony Hutter <[email protected]>
Reviewed-by: Tino Reichardt <[email protected]>
Signed-off-by: Benjamin Sherman <[email protected]>
Closes #15744 

0 files changed, 0 insertions, 0 deletions