ami: support HVM images in copy script
ami: support HVM images in copy script

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