Spawn via vpython when old module detected. Not sure of a better way to detect this case as it seems to be running with the same python version as our vpython but modules are old. Bug: angleproject:7326 Change-Id: I1750f65afdfdfc289af71bc7f426d5ba50dfd4a4 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3642804 Commit-Queue: Roman Lavrov <romanl@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>