patch(integration_test_charm.yaml): Display status and logs from multiple models

[marceloneppel]

Issue

For integration tests like the one for async replication, it would be helpful to have status and logs from multiple models.

Solution

In .github/workflows/integration_test_charm.yaml:

• Loop over the existing models (except the controller model) and run the juju status and juju debug-log (or convert-logsink-to-debug-log for LXD clouds) commands for each model, appending the output to the status and the log files, respectively.

• For the logs, write the model name before writing the logs to the logs file.

In python/cli/data_platform_workflows_cli/convert_logsink_to_debug_log.py:

• Get the first model from the juju show-model command output because a second model has a name different from the test (example: test-other in the PostgreSQL charms async replication integration tests).

• Append the logs to the already existing log file to support logs from multiple models.

Fixes #193.

[marceloneppel]

Superseded by #195.