stub out databaseserver for rails 2

Change-Id: Icb8fada01a94e5c3122f74db340c69fa1b2959d2
Reviewed-on: https://gerrit.instructure.com/31701
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Rob Orton <rob@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>