Integrations for microceph rgw

[hemanthnakkina]

Description

Add following integrations to charm microceph

• traefik_route
• identity-service

Type of change

Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] CleanCode (Code refactor, test updates, does not introduce functional changes)
• [ ] Documentation update (Doc only change)

How Has This Been Tested?

Added Unit test cases. Manual testing with sunbeam.

Contributor's Checklist

Please check that you have:

• [x] self-reviewed the code in this PR.
• [x] added code comments, particularly in hard-to-understand areas.
• [ ] updated the user documentation with corresponding changes.
• [x] added tests to verify effectiveness of this change.

Depends on:

• [ ] https://github.com/canonical/microceph/pull/363

[hemanthnakkina]

This PR is ready for review

[hemanthnakkina]

Hey @hemanthnakkina some small nits inline. It would be great if we could also get a functional test. We're installing sunbeam as part of the CI, wonder if we could do an add-relation for identity and trafik route there as well?

@sabaini Thanks for the review. I am planning to add functional test for the integrations once the sunbeam changes are merged. However sunbeam changes will be part of 2024.1 rather than 2023.2, so i will update functional tests on next 2024.1/beta release (likely to be next week) once these PRs are merged.