just track switchman master for now

Change-Id: Id6499a0698e3207d55259bd49f66431ef2d63490
Reviewed-on: https://gerrit.instructure.com/28727
Reviewed-by: James Williams  <jamesw@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>