linkerd/linkerd2 edge-20.10.4

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edge-20.10.4

This edge release is a release candidate for stable-2.9.0. For the proxy, there
have been changes to improve performance, remove unused code, and configure
ports that can be ignored by default. Also, this edge release adds enhancements
to the multicluster configuration and observability, adds more translations to
the dashboard, and addresses a bug in the CLI.

• Added more Spanish translations to the dashboard and more labels that can be
  translated
• Added support for creating multiple service accounts when installing
  multicluster with Helm to allow more granular revocation
• Renamed global.proxy.destinationGetNetworks to global.clusterNetworks.
  This is a cluster-wide setting and can no longer be overridden per-pod
• Fixed an empty multicluster Grafana graph which used a deprecated label
• Added the control plane tracing ServiceAccounts to the linkerd-psp
  RoleBinding so that it can be used in environments where PodSecurityPolicy
  is enabled
• Enhanced EKS support by adding 100.64.0.0/10 to the set of discoverable
  networks
• Fixed a bug in the way that the --all-namespaces flag is handled by the
  linkerd edges command
• Added a default set of ports to bypass the proxy for server-first, https,
  and memcached traffic