build_image: refresh scripts bundled into the update zip.
build_image: refresh scripts bundled into the update zip.

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