message: ci: mirror .pb.go to envoyproxy/go-control-plane.
  * ci: mirror .pb.go to envoyproxy/go-control-plane.
  This reverts "ci: temporarily disable go_mirror while figuring out SSH keys (#8311)",
  commit I've added a new key pair and set this up in both
  Circle and GitHub, so pushes should now work.
diff: @@ -56,6 +56,17 @@ jobs:
  path: /build/envoy/generated
  destination: /
  + go_control_plane_mirror:
  + executor: ubuntu-build
  + steps:
  + - run: rm -rf /home/circleci/project/.git # CircleCI git caching is likely broken
  + - checkout
  + - run: ci/do_circle_ci.sh bazel.api
  + - add_ssh_keys:
  + fingerprints:
  + - "9d:3b:fe:7c:09:3b:ce:a9:6a:de:de:41:fb:6b:52:62"
  + - run: ci/go_mirror.sh
  +
  filter_example_mirror:
  executor: ubuntu-build
  steps:
  