ARCVM: Use Concierge

Previously, ARCVM was started via a script called run-arcvm. This CL
stops doing that, and instead, start the VM through Concierge to share
more code with Crostini.

This CL depends on two CrOS CLs: CL:1638177 and CL:1638120

BUG=b:120577015
TEST=components_unittests
TEST=ARCVM starts

Change-Id: I1f8b3415ae1890889dc91f9d1762b1a63543af50
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1630770
Commit-Queue: Yusuke Sato <yusukes@chromium.org>
Reviewed-by: Chris Morin <cmtm@chromium.org>
Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>
Cr-Commit-Position: refs/heads/master@{#672277}
3 files changed