message: Update AWS C++ SDK to 1.3.15
  This fix tries to address the issue raised in 15066
  where AWS C++ SDK version was not high enough to support
  ECS.
  This fix updates AWS C++ SDK to 1.3.15.
  This fix fixes 15066.
diff: @@ -505,11 +505,11 @@ def tf_workspace(path_prefix="", tf_repo_name=""):
  tf_http_archive(
  name = "aws",
  urls = [
  - "https://mirror.bazel.build/github.com/aws/aws-sdk-cpp/archive/1.0.90.tar.gz",
  - "https://github.com/aws/aws-sdk-cpp/archive/1.0.90.tar.gz",
  + "https://mirror.bazel.build/github.com/aws/aws-sdk-cpp/archive/1.3.15.tar.gz",
  + "https://github.com/aws/aws-sdk-cpp/archive/1.3.15.tar.gz",
  ],
  - sha256 = "f599b57aec4f03ad696044dd430b2d201864113937353adc346f53ad47991319",
  - strip_prefix = "aws-sdk-cpp-1.0.90",
  + sha256 = "b888d8ce5fc10254c3dd6c9020c7764dd53cf39cf011249d0b4deda895de1b7c",
  + strip_prefix = "aws-sdk-cpp-1.3.15",
  build_file = str(Label("//third_party:aws.BUILD")),
  )
  