Use Skylark git_repository workspace rule (#57)
Use Skylark git_repository workspace rule (#57)

The native git_repository rule does not honor git's proxy settings
(https://github.com/bazelbuild/bazel/issues/3893), so this means
that anything that depend on protoc-gen-validate will fail when building
while behind a proxy.
envoyproxy/protoc-gen-validate,envoyproxy/protoc-gen-validate,envoyproxy/protoc-gen-validate,envoyproxy/protoc-gen-validate,envoyproxy/protoc-gen-validate