[Module Catalog] Fetch Mandatory ModuleTemplate which has the highest version

[nesmabadr]

Description

We agreed to have the name of the mandatory ModuleTemplates the same format as that of the regular ModuleTemplates modulename-version. So we need to handle the case when there are multiple ModuleTemplates for the same Mandatory Module by using the ModuleTemplate with the highest version.

Reasons

No response

Acceptance Criteria

• Add the logic to fetch the ModuleTemplate with highest version for mandatory modules.
• Add an E2E test scenario with two ModuleTemplates with different versions for a mandatory module. (Validate its installation as well as its deletion).
• Add documentation that for mandatory modules, KLM will install the module template with the highest version in case there are multiple
• Follow-up on informing neighbors that modulectl can now also be used for mandatory modules

Feature Testing

Integration tests, End-to-End tests, Unit tests

Testing approach

No response

Attachments

No response

[c-pius]

Still needs canary verification, but verification blocked by #2177