Apply factory cutoff scripts in memento updater

Move factory cutoff scripts to memento updater so we can share those
scripts with factory test.

BUG=None
TEST=Build and test factory install shim on Paine

CQ-DEPEND=CL:303248,CL:304004,CL:304284

Change-Id: Ia77f86d94842017c3c2c87bee1578f314583d9e7
Reviewed-on: https://chromium-review.googlesource.com/304280
Commit-Ready: Shun-Hsing Ou <shunhsingou@chromium.org>
Tested-by: Shun-Hsing Ou <shunhsingou@chromium.org>
Reviewed-by: Bowgo Tsai <bowgotsai@chromium.org>
1 file changed