distcheck fail: no module named 'kea_conn'
https://jenkins.aws.isc.org/job/kea-dev/job/distcheck/324/
14:57:28 Executing kea-shell (echo | /tmp/workspace/kea-dev/distcheck/kea-1.9.6-git/_build/sub/src/bin/shell/kea-shell --port 8443 > /tmp/workspace/kea-dev/distcheck/kea-1.9.6-git/_build/sub/src/bin/agent/tests/shell-stdout.txt)
14:57:28 Traceback (most recent call last):
14:57:28 File "/tmp/workspace/kea-dev/distcheck/kea-1.9.6-git/_build/sub/src/bin/shell/kea-shell", line 27, in <module>
14:57:28 from kea_conn import CARequest # CAResponse
14:57:28 ModuleNotFoundError: No module named 'kea_conn'
14:57:28 [ FAILED ] NoTLS (exit code: 1)