--keyserver-options auto-key-retrieve is obsolete

[timlegge]

As per the gpg man file. Need to review when the option changed

   --keyserver-options {name=value}
          This  is  a  space  or comma delimited string that gives options for the keyserver. Options can be prefixed with a `no-' to
          give the opposite meaning. Valid import-options or export-options may be used here as well to apply to  importing  (--recv-
          key)  or  exporting  (--send-key) a key from a keyserver. While not all options are available for all keyserver types, some
          common options are:

          auto-key-retrieve
                 This is an obsolete alias for the option auto-key-retrieve.  Please do not use it; it will be removed in future ver‐
                 sions..

[sparrow2009]

As reported here https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1060664 this affects CPAN module installation with signature verification on some systems today.

[timlegge]

I am working on a patch