Cross: Update code repo CI pipelines for "classify a message" integration test (split from iteration 11)

[martinkearn]

AS A system engineer I WANT the "classify a message" integration test to be executed as part of the CI pipeline for each relevant code repo SO THAT failures can be flagged automatically, and issues are not merged into the main branch

Use Docker Compose to execute the "classify a message" integration test as part of the CI pipeline (i.e., gate to a pull request and merge to main) using local Docker containers as per https://github.com/buerokratt/Cross-functional-requirements/blob/main/docs/technical/integration-testing-strategy.md#docker-via-code-repository-ci-pipeline

Do this on the pipelines for the following code repos:

• https://github.com/buerokratt/Mock-Bot
• https://github.com/buerokratt/Mock-Classifier
• https://github.com/buerokratt/DMR

This will ensure that changes to any of these components are tested in terms of integration with other components.

Dependencies

• [x] https://github.com/buerokratt/Cross-functional-requirements/issues/13
• [x] https://github.com/buerokratt/Tests/issues/1
• [x] https://github.com/buerokratt/CentOps/issues/77
• [x] https://github.com/buerokratt/Tests/issues/5

Acceptance Criteria

• [x] buerokratt/Mock-Bot#38
• [x] buerokratt/Mock-Classifier#53
• [x] buerokratt/DMR#58
• [x] buerokratt/CentOps#81

[martinkearn]

Working on an offline spike for this work first to work out the details. See https://github.com/martinkearn/Int-test-multi-repo-test and https://github.com/martinkearn/Int-test-multi-repo-code

[martinkearn]

This is a split issue. Work was completed in Iteration 11 under https://github.com/buerokratt/Tests/issues/5 (2 points) which was originally part of this ticket (which was originally 5 points).

[martinkearn]

Associated PRs are in the sub-tasks (acceptance criteria)