devmode-test: change sanity test back to python

We create these again, so switch the test back to them.

BUG=chromium:998225
TEST=devinstall_test.py passes

Change-Id: I6fff7a3fd2413c64f9ce7cc75074b1b962cf3735
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crostestutils/+/1804885
Tested-by: Mike Frysinger <vapier@chromium.org>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
1 file changed