Install bazel in autoscaler development configs.

ci/long_running_tests/config.yaml

@@ -49,6 +49,7 @@ setup_commands:
     # - sudo apt-get update
     # - sudo apt-get install -y build-essential curl unzip
     # - git clone https://github.com/ray-project/ray || true
+    # - ray/ci/travis/install-bazel.sh
     # - cd ray/python; git checkout master; git pull; pip install -e . --verbose
     # Install nightly Ray wheels.
     - pip install -U https://s3-us-west-2.amazonaws.com/ray-wheels/<<RAY_RELEASE_HASH>>/ray-<<RAY_RELEASE_VERSION>>-cp36-cp36m-manylinux1_x86_64.whl

ci/stress_tests/stress_testing_config.yaml

@@ -98,6 +98,7 @@ setup_commands:
     - echo 'export PATH="$HOME/anaconda3/bin:$PATH"' >> ~/.bashrc
     # # Build Ray.
     # - git clone https://github.com/ray-project/ray || true
+    # - ray/ci/travis/install-bazel.sh
     - pip install boto3==1.4.8 cython==0.29.0
     # - cd ray/python; git checkout master; git pull; pip install -e . --verbose
     - pip install https://s3-us-west-2.amazonaws.com/ray-wheels/latest/ray-0.8.0.dev0-cp36-cp36m-manylinux1_x86_64.whl

python/ray/autoscaler/aws/development-example.yaml

@@ -94,6 +94,7 @@ setup_commands:
     - echo 'export PATH="$HOME/anaconda3/bin:$PATH"' >> ~/.bashrc
     # Build Ray.
     - git clone https://github.com/ray-project/ray || true
+    - ray/ci/travis/install-bazel.sh
     - pip install boto3==1.4.8 cython==0.29.0
     - cd ray/python; pip install -e . --verbose