* `clean` actually cleans all dynamically created files, in particular it now properly cleans the generated Gemfile so
that changes to the Gemfile.template reflect in a rerun of `bundler`
* `rubyTests` and `test` are now one-off and will automatically bootstrap JRuby and Gems required by the tests if necessary
* Fixed Readme to document the now much simpler test targets
* All rake tasks remain unchanged and still work exactly as they did before
Fixes#8583
Instead of using rake to bootstrap we are slowly moving part of our
infra to gradle this is the first step taken, I didn't change the calls,
I just made the `rake bootstrap` call the `gradle bootstrap`
Closes: #8234Fixes#8238
This commit includes:
* A base Dockerfile and script to push to a Docker repo
* A per-build Dockerfile (derived from the base)
* Updates to the test scripts to allow for more parallel builds
* Docker wrappers for the tests scripts
* Update for the integration test readme to manually run the tests
* Clean up the output of the Java tests
* Remove offline tag for tests (no longer needed that we don't use docker dependent services)
This commit does NOT include:
* Changes needed for the CI system to use Docker
Fixes#8223
