Clean up the ci/ directory. This means getting rid of the travis/ path completely and moving the files into sensible subdirectories.
Details:
- Moves everything under ci/travis into subdirectories, e.g. ci/build, ci/lint, etc.
- Minor adjustments to some scripts (variable renames)
- Removes the outdated (unused) asan tests
Instead of installing dependencies in each Buildkite job, let's move this to the Dockerfile instead.
This will update GPU tests to always use Python 3.7.
* [ci/tune] Add Tune GPU pipeline step to CI
* cont.
* add sgd gpu tests
* format yaml, fix imports
* install horovod; fix line wrapping
* set GPU per worker to 0.5
* fix import
* move test to 4gpu machine
* fix lint
* lint
* set visible devices
* pull in tf gpu fix
* Fix Tune GPU pipeline step
* nit
* Disable GPU tests until we have some
* Re-add empty rllib tests
Co-authored-by: Matthew Deng <matthew.j.deng@gmail.com>
