Upload S3 wheels from all branches.

Author: devin-petersohn

.travis.yml

@@ -189,10 +189,9 @@ deploy:
     local_dir: .whl
     upload-dir: $TRAVIS_COMMIT
     skip_cleanup: true
-    only:
-      - master
     on:
       repo: ray-project/ray
+      all_branches: true
       condition: $LINUX_WHEELS = 1 || $MAC_WHEELS = 1
   - provider: s3
     access_key_id: AKIAJ2L7XDUSZVTXI5QA