Feature Request: Is it feasible to set default config for all registry?

[chenlein]

Just like:

[registry."_default"]
  # mirror configuration to handle path in case a mirror registry requires a /project path rather than just a host:port
  mirrors = ["yourmirror.local:5000"]
  http = true
  insecure = true

or

[registry.".*"]
  # mirror configuration to handle path in case a mirror registry requires a /project path rather than just a host:port
  mirrors = ["yourmirror.local:5000"]
  http = true
  insecure = true