Add AWS anonymous access when reading/writing binary cache to AWS S3.#434

BillyONeal merged 1 commit intomicrosoft:mainmicrosoft/vcpkg-tool:mainfrom

AenBleidd:vko_add_aws_s3_anonymous_supportAenBleidd/vcpkg-tool:vko_add_aws_s3_anonymous_supportCopy head branch name to clipboard