Issue when deploying with Focal

[aym-frikha]

Steps to reproduce

1. deploy the bundle with just changing the series to focal

Expected behavior

All units are green and working correctly

Actual behavior

Error Logs from one unit, and it's the same for all the other units: https://pastebin.canonical.com/p/vR552gs2mg/

Versions

3/stable

Operating system:
focal

Juju CLI: 2.9.43-ubuntu-amd64

Juju agent: 2.9.43

Charm revision: 3/stable rev 123

LXD: 5.0 /5.13

Log output

Juju debug log:

2023-06-14 08:26:36 INFO juju.worker.uniter resolver.go:155 awaiting error resolution for "storage-attached" hook
2023-06-14 08:26:36 WARNING unit.kafka/0.data-storage-attached logger.go:60 Traceback (most recent call last):
2023-06-14 08:26:36 WARNING unit.kafka/0.data-storage-attached logger.go:60   File "./src/charm.py", line 29, in <module>
2023-06-14 08:26:36 WARNING unit.kafka/0.data-storage-attached logger.go:60     from config import KafkaConfig
2023-06-14 08:26:36 WARNING unit.kafka/0.data-storage-attached logger.go:60   File "/var/lib/juju/agents/unit-kafka-0/charm/src/config.py", line 26, in <module>
2023-06-14 08:26:36 WARNING unit.kafka/0.data-storage-attached logger.go:60     from utils import map_env, safe_write_to_file, update_env
2023-06-14 08:26:36 WARNING unit.kafka/0.data-storage-attached logger.go:60   File "/var/lib/juju/agents/unit-kafka-0/charm/src/utils.py", line 145, in <module>
2023-06-14 08:26:36 WARNING unit.kafka/0.data-storage-attached logger.go:60     def map_env(env: list[str]) -> dict[str, str]:
2023-06-14 08:26:36 WARNING unit.kafka/0.data-storage-attached logger.go:60 TypeError: 'type' object is not subscriptable 

[github-actions]

https://warthogs.atlassian.net/browse/DPE-2096

[aym-frikha]

Seems the bundle is not tested for Focal.