Comment # 1 on bug 1046158 from Michal Marek

The signing service is set up properly, you can see in the build log that it
loops over the *.sig files provided by the service. A solution to the issue,
besides adding # needssslcertforbuild, is to link the pesign-obs-integration
package to the project. That way, it will use the correct fallback public
certificate.

Reassigning to Joey to decide whether the error should be non-fatal in the non
SecureBoot case.