Stop using symlinks in /var/spool

One usage of symlinks in /var/spool used by CUPS when a PPD is
cached locally.  Prefer to copy the file instead.

BUG=chromium:817851
TEST=Run platform_AddPrinter

Change-Id: I4a67f3c3dd98aab7e871fb9e719aa9842bf37fa7
Reviewed-on: https://chromium-review.googlesource.com/1236775
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Sean Kau <skau@chromium.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
1 file changed