lakitu: Add arch support when running VMTests

BUG=b/175740674
TEST=Manually
RELEASE_NOTE=None

Change-Id: I0d3d62a0ab95c9920215ca20e3e3f70311cd2836
Reviewed-on: https://cos-review.googlesource.com/c/third_party/platform/crosutils/+/12310
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Tested-by: Roy Yang <royyang@google.com>
Reviewed-on: https://cos-review.googlesource.com/c/cos/scripts/+/59756
Tested-by: Oleksandr Tymoshenko <ovt@google.com>
Reviewed-by: Oleksandr Tymoshenko <ovt@google.com>