modsig: differentiate between ephemeral and persistent key names

Using the same name for ephemeral and "persistent" keys results
in deleting the "persistent" key.  This patch renames the normal
kbuild asymmetric key pair name to "default_signing_key" and the
ephemeral key pair name to "ephemeral_signing_key".

Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
2 files changed