trivial: Move the ConditionPathExists to the right file
trivial: Move the ConditionPathExists to the right file

*This* is why we were getting confused.

superm1/fwupd,vathpela/fwupd,vathpela/fwupd,vathpela/fwupd,fwupd/fwupd,fwupd/fwupd,fwupd/fwupd,hughsie/fwupd,vathpela/fwupd,fwupd/fwupd,superm1/fwupd,hughsie/fwupd,hughsie/fwupd,superm1/fwupd,hughsie/fwupd