cros_run_bvt: source common.sh directly

This is the last script that loads the installed common.sh script.
Since this must be inside the chroot, have it source the file from
its source location directly instead.

BUG=None
TEST=`./cros_run_bvt --help` still works

Change-Id: I1659f74208e42c717ed55ad165bd0406badd5285
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crostestutils/+/1843233
Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
1 file changed