fix(image_to_vm): Replace qemu's config file with a script.
fix(image_to_vm): Replace qemu's config file with a script.

The recommended command using the config file was triggering a massive
memory leak in qemu because it was adding both the default virtual
hardware nic as well as the virtio nic. This could be worked around by
adding something like -net none or moving all the -net commands from the
file to the command line but eh. Clearly qemu config files are used and
tested by nobody else so lets just use a trusty script instead.

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