Support passing headers to download if Bazel supports it #598
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Rather than falling back to curl let's actually pass the headers to the native Bazel downloader if we're running a version of Bazel that supports them (i.e. >= 7.1.0). I had to bring the
bazel_features
repo to detect this.Note that I've kept support for curl rather than introducing the breaking change (as #562 discusses) so that we can start taking advantage of it without breaking for people still on older versions of Bazel.