Calculate estimated test run time from the last successful build, if possible
Calculate estimated test run time from the last successful build, if possible

Once the build time exceeds 1.5 * the estimate then we stop displaying
the estimate.

prathamesh-sonpatki/frontend,RayRutjes/frontend,prathamesh-sonpatki/frontend,RayRutjes/frontend,circleci/frontend,circleci/frontend,circleci/frontend