Use Express template for auto devops app
What does this MR do?
Using the auto_devops_rack
application for deployment in the test setup is causing some intermittent failures Retrying download gem from https://rubygems.org/ due to error (2/4): Gem::RemoteFetcher::UnknownHostError timed out
which causes tests to be flaky: #221283 (comment 390245210)
While attempting to solve the issues with RubyGems and our CI this MR introduces a temporary solution to use NodeJS instead to stabilize the tests as a workaround.