ipa-backup: backup the PKCS module config files setup by IPA
ipa installer creates /etc/pkcs11/modules/softhsm2.module in order
to disable global p11-kit configuration for NSS.
This file was not included in the backups, and not restored.
The fix adds the file to the list of files to include in a backup.
Fixes: https://pagure.io/freeipa/issue/8073
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>