Add check for dpkg info and mkdir if it doesn't exist
Add check for dpkg info and mkdir if it doesn't exist

Review URL: http://codereview.chromium.org/551177

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