linkerd/linkerd2 edge-20.5.5

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edge-20.5.5

This edge release adds refinements to the Linkerd multicluster implementation,
adds new health checks for the tracing add-on, and addresses an issue in which
outbound requests from the proxy result in looping behavior.

• CLI
  • Added the multicluster command along with subcommands to configure and
    deploy Linkerd workloads which enable services to be mirrored across
    clusters
  • Added health-checks for tracing add-on
• Proxy
  • Added logic to prevent loops in outbound requests