Fix common/download_test.go to avoid formatting the volume name to a hidden windows share when not on windows.
Fix common/download_test.go to avoid formatting the volume name to a hidden windows share when not on windows.

mkuzmin/packer,dave2/packer,bryson/packer,paulmey/packer,tb3088/packer,ChrisLundquist/packer,tas50/packer,ricardclau/packer,grubernaut/packer,KohlsTechnology/packer,mkuzmin/packer,tas50/packer,ricardclau/packer,ChrisLundquist/packer,tas50/packer,rnaveiras/packer,bryson/packer,pecigonzalo/packer,pieter-lazzaro/packer,paulmey/packer,youhong316/packer,bryson/packer,ChrisLundquist/packer,grubernaut/packer,youhong316/packer,grubernaut/packer,dave2/packer,rnaveiras/packer,rnaveiras/packer,timsutton/packer,mitchellh/packer,ChrisLundquist/packer,routelastresort/packer,KohlsTechnology/packer,tb3088/packer,tb3088/packer,bryson/packer,p1-nico/packer,ricardclau/packer,rnaveiras/packer,youhong316/packer,ChrisLundquist/packer,bryson/packer,pieter-lazzaro/packer,tb3088/packer,p1-nico/packer,mkuzmin/packer,hashicorp/packer,dave2/packer,tb3088/packer,mkuzmin/packer,KohlsTechnology/packer,KohlsTechnology/packer,paulmey/packer,pecigonzalo/packer,routelastresort/packer,hashicorp/packer,mitchellh/packer,mitchellh/packer,p1-nico/packer,KohlsTechnology/packer,ricardclau/packer,youhong316/packer,pecigonzalo/packer,ricardclau/packer,routelastresort/packer,paulmey/packer,pieter-lazzaro/packer,youhong316/packer,dave2/packer,routelastresort/packer,tas50/packer,ricardclau/packer,timsutton/packer,tas50/packer,ChrisLundquist/packer,hashicorp/packer,mkuzmin/packer,rnaveiras/packer,dave2/packer,pieter-lazzaro/packer,rnaveiras/packer,grubernaut/packer,bryson/packer,paulmey/packer,pecigonzalo/packer,mkuzmin/packer,mitchellh/packer,routelastresort/packer,KohlsTechnology/packer,timsutton/packer,grubernaut/packer,tas50/packer,hashicorp/packer,p1-nico/packer,mitchellh/packer,dave2/packer,pieter-lazzaro/packer,p1-nico/packer,youhong316/packer,grubernaut/packer,timsutton/packer,p1-nico/packer,tb3088/packer,pieter-lazzaro/packer,paulmey/packer,timsutton/packer,timsutton/packer