platforms:
  ubuntu1404:
    build_targets:
    - "//waterfall/golang/stream/..."
    - "//waterfall/golang/net/qemu/..."
    test_targets:
    - "//waterfall/golang/stream/..."
    - "//waterfall/golang/net/qemu/..."

platforms:
  ubuntu1804:
    build_targets:
    - "//waterfall/golang/stream/..."
    - "//waterfall/golang/net/qemu/..."
    test_targets:
    - "//waterfall/golang/stream/..."
    - "//waterfall/golang/net/qemu/..."

Change docker image to ubuntu1804
Change docker image to ubuntu1804