don't use user_cp to copy .boto to ~root

user_cp tries to copy as root and as non-root but neither works in this
case if the source is on nfs because root cannot read the source and
non-root cannot write the destination.

BUG=chromium:357434
TEST=with nfs home dir, enter new chroot and see that sudo gsutil works

Change-Id: Ifc50fe9f639ebd5137fff080b3a5ec2c1a4eec69
Reviewed-on: https://chromium-review.googlesource.com/191952
Reviewed-by: David James <davidjames@chromium.org>
Tested-by: Frank Henigman <fjhenigman@chromium.org>
Commit-Queue: Frank Henigman <fjhenigman@chromium.org>
1 file changed