passing CHROMEOS_RELEASE_APPID to the PASSTHRU list into chroot
passing CHROMEOS_RELEASE_APPID to the PASSTHRU list into chroot

Change-Id: Ib5296eb4d3eea6d2430cde04d855ccbefd507bf4

BUG=
TEST=

Review URL: http://codereview.chromium.org/5132002

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