add springified binstubs

also switch rails3 lockfile to the default, so the spring binstub can
use the default lockfile and see itself

Change-Id: Id10cbc3df010671a59c73137a77583e2c2e0e5a8
Reviewed-on: https://gerrit.instructure.com/37802
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Cameron Sutter <csutter@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>