Build shim into the image
Build shim into the image

grub requires that shim be available in order to call out to verify the
kernel. Sign it and stick it in the image alongside grub.

nicescale/scripts,nicescale/scripts,fivethreeo/scripts,coreos/scripts,endocode/scripts,gtank/scripts,sigma/coreos-scripts,zhang0137/scripts,mjg59/scripts,trnubo/scripts,mjg59/scripts,glevand/coreos--scripts,zhang0137/scripts,endocode/scripts,gtank/scripts,sigma/coreos-scripts,coreos/scripts,glevand/coreos--scripts,smilart/scripts,trnubo/scripts,zhang0137/scripts,marineam/coreos-scripts,trnubo/scripts,andrejro/coreos--scripts,nicescale/scripts,endocode/scripts,smilart/scripts,marineam/coreos-scripts,fivethreeo/scripts,andrejro/coreos--scripts,mjg59/scripts,fivethreeo/scripts,marineam/coreos-scripts,smilart/scripts,BugRoger/scripts,BugRoger/scripts,BugRoger/scripts,gtank/scripts,andrejro/coreos--scripts,sigma/coreos-scripts