[monitoring-plugins] update_gnulib_2021 branch rewritten

[Git Repository]

   Module: monitoring-plugins
   Branch: update_gnulib_2021
 Old SHA1: 9a1eb6988110a64cdeacb2072ce93eb0fc5150da
 New SHA1: e6f201f1e724ebd76e884055748964fcf423c9b8
      URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/log/?id=refs/heads/update_gnulib_2021

The update_gnulib_2021 branch has been rewritten.