ut-extended not running for alpine & freebsd

https://jenkins.aws.isc.org/job/kea-dev/job/ut-extended/258/

00:06:10.158  + python3 ./hammer.py prepare-system -p local -w radius
00:06:10.429  [HAMMER]  2021-04-23 14:37:05,513 Enabled features: unittest radius perfdhcp docs install
00:06:10.442  [HAMMER]  2021-04-23 14:37:05,514 Preparing deps for alpine 3.12
00:06:10.442  [HAMMER]  2021-04-23 14:37:05,516 >>>>> Executing sudo apk add gcc g++ make autoconf automake libtool openssl-dev boost-libs boost-dev procps tar py3-sphinx py3-sphinx_rtd_theme in /tmp/workspace/kea-dev/ut-extended
00:06:10.699  [HAMMER]  2021-04-23 14:37:05,757 >>>>> Executing sudo apk add log4cplus log4cplus-dev --update-cache --repository http://dl-3.alpinelinux.org/alpine/edge/testing/ --allow-untrusted in /tmp/workspace/kea-dev/ut-extended
00:06:10.974  [HAMMER]  2021-04-23 14:37:06,197 Can't add 'vagrant' user to 'abuild' group. Vagrant or abuild does not exist.
00:06:10.987  [HAMMER]  2021-04-23 14:37:06,197 >>>>> Executing sudo adduser jenkins abuild in /tmp/workspace/kea-dev/ut-extended
00:06:10.987  fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/main/x86_64/APKINDEX.tar.gz
00:06:10.987  fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/community/x86_64/APKINDEX.tar.gz
00:06:10.987  OK: 1474 MiB in 360 packages
00:06:10.987  fetch http://dl-3.alpinelinux.org/alpine/edge/testing/x86_64/APKINDEX.tar.gz
00:06:10.987  OK: 1474 MiB in 360 packages
00:06:10.987  Traceback (most recent call last):
00:06:10.987    File "./hammer.py", line 2630, in <module>
00:06:10.987      main()
00:06:10.987    File "./hammer.py", line 2602, in main
00:06:10.987      prepare_system_cmd(args)
00:06:10.987    File "./hammer.py", line 2443, in prepare_system_cmd
00:06:10.987      prepare_system_local(features, args.check_times)
00:06:10.987    File "./hammer.py", line 1548, in prepare_system_local
00:06:10.987      _install_freeradius_client(system, revision, features, env, check_times)
00:06:10.987    File "./hammer.py", line 1207, in _install_freeradius_client
00:06:10.987      raise NotImplementedError('no implementation for %s' % system)
00:06:10.987  NotImplementedError: no implementation for alpine