relayor v22.1.0-rc

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Changes since relayor v22.0.0-rc:

• add support for prometheus blackbox_exporter scrape configuration generation
  • this feature generates a prometheus scrape config for blackbox_exporter to monitor the reachability of all your ORPorts/DirPorts on IPv4 and IPv6
  • blackbox exporter behind HTTP basic auth is supported
  • this feature does not depend on MetricsPort support and can be used on all tor relays even those that do not support MetricsPort (like current stable tor versions)
• prometheus support improvements:
  • randomize metrics_path
  • randomize HTTP basic auth username
• kitchen: add test for blackbox_exporter scenario

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This discussion was created from the release relayor v22.1.0-rc.