Support FreeRADIUS 3

[plettich]

there are some issues getting this to work with FreeRADIUS 3 (default on debian 9.4). My changes:

• The $raddbdir/sites-enabled/privacyidea-file:

  server {
      authorize {
              files
              perl
              if (ok || updated) {
                      update control {
                              Auth-Type := Perl
                      }
              }
      }
      listen {
              type = auth
              ipaddr = *
              port = 0
      }
      authenticate {
              Auth-Type Perl {
                      perl
              }
      }
  }

• The $raddbdir/mods-enabled/perl-file:

  perl {
      filename = ${modconfdir}/${.:instance}/privacyidea.pl
  }

• Copy the privacyidea_radius.pm-file into $raddbdir/mods-config/perl/privacyidea.pl
• Update the $raddbdir/dictionary-file

I also removed all other enabled sites. On debian 9.4 you also need to remove the libjson-xs-perl-package since it breaks when running in threaded mode: https://cygwin.com/ml/cygwin/2016-03/msg00033.html Radius still complains about $RAD_REPLY{'Class'} not being defined but the request goes through. Oh, and use User-Password=... for radclient instead of just Password=....

[cornelinux]

@plettich I think we support freeradius 3 now. The centos packages and UCS packages build that way. So the issue could be closed, right? Or is it more of a packaging issue, so it should be move to another repo?

[cornelinux]

I suggest to add two directories with the corresponding config:

freeradius2/privacyidea freeradius3/privacyidea

[cornelinux]

OK, working on packaging for FreeRADIUS2 / Ubuntu 18.04