Clobber the cros-chrome-sdk cache everytime when fetching artifacts.

Adds 2-3 minutes to every cros-flavored "gclient runhooks", which
is unfortunate.

Should be unnecessary when/if crbug.com/834134 is fixed.

Bug: 832374
Change-Id: I2696fc736350ecbe2b641112d2140db66118a00e
Reviewed-on: https://chromium-review.googlesource.com/1016137
Reviewed-by: Dirk Pranke <[email protected]>
Commit-Queue: Ben Pastene <[email protected]>
Cr-Commit-Position: refs/heads/master@{#551850}
1 file changed