use test.sh scripts for all gems

Change-Id: If97bbe476b8bf747e3b83bb7bf22783e2508da69
Reviewed-on: https://gerrit.instructure.com/29507
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Stephan Hagemann <stephan@pivotallabs.com>
Product-Review: Stephan Hagemann <stephan@pivotallabs.com>
QA-Review: Stephan Hagemann <stephan@pivotallabs.com>