Added sudo to VBoxManage call, to fix permission denied error when building a VirtualBox image
Added sudo to VBoxManage call, to fix permission denied error when building a VirtualBox image

BUG=None
TEST=Run image_to_vm.sh to build a VirtualBox image for the x86-generic board, confirm image builds successfully

Change-Id: I3ce9aac1eef6dfa695747e92e7d7e75ddd524027
Reviewed-on: https://gerrit.chromium.org/gerrit/12449
Reviewed-by: Richard Barnette <9e7d66387742bf40b0d2548ef2b93e7c522ca0eb@chromium.org>
Tested-by: Liam McLoughlin <d8e12b715d74db38ff2ae8158264755491778df1@hexxeh.net>
Commit-Ready: Jon Kliegman <7addd549d0b04b2dc663a0a7eb2c1810caf11d96@chromium.org>
Reviewed-by: Jon Kliegman <7addd549d0b04b2dc663a0a7eb2c1810caf11d96@chromium.org>

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