fix(image_to_vm): Add missing call to check_gsutil_opts.
fix(image_to_vm): Add missing call to check_gsutil_opts.

The --upload_path argument was not being properly handled because this
was missing, creating lots of 54.0.0+2013-08-28-1810 style directories
instead of master. Oops.

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