New Resource and Data Source: container_app_environment_managed_certificate

[CheeseMite]

Community Note

• Please vote on this PR by adding a 👍 reaction to the original PR to help the community and maintainers prioritize for review
• Please do not leave comments along the lines of "+1", "me too" or "any updates", they generate extra noise for PR followers and do not help prioritize for review

Description

Add new data source and resource – container_app_environment_managed_certificate.

According to a comment here, a new bindingType option bindingType: 'auto' will be introduced to the customDomains property of the containerApp resource starting in mid-January 2025. This update will simplify the process by eliminating the current two-step approach, where both a binding and a managed certificate need to be created in specific order. With this change, only the managed certificate will need to be created. This PR adds the managed certificate resource to support this scenario.

PR Checklist

• I have followed the guidelines in our Contributing Documentation.
• I have checked to ensure there aren't other open Pull Requests for the same update/change.
• I have checked if my changes close any open issues. If so please include appropriate closing keywords below.
• I have updated/added Documentation as required written in a helpful and kind way to assist users that may be unfamiliar with the resource / data source.
• I have used a meaningful PR title to help maintainers and other users understand this change and help prevent duplicate work.
  For example: “resource_name_here - description of change e.g. adding property new_property_name_here”

Changes to existing Resource / Data Source

• I have added an explanation of what my changes do and why I'd like you to include them (This may be covered by linking to an issue above, but may benefit from additional explanation).
• I have written new tests for my resource or datasource changes & updated any relevent documentation.
• I have successfully run tests with my changes locally. If not, please provide details on testing challenges that prevented you running the tests.
• (For changes that include a state migration only). I have manually tested the migration path between relevant versions of the provider.

Change Log

Below please provide what should go into the changelog (if anything) conforming to the Changelog Format documented here.

• New Data Source: container_app_environment_managed_certificate
• New Resource: container_app_environment_managed_certificate

This is a (please select all that apply):

• Bug Fix
• New Feature (ie adding a service, resource, or data source)
• Enhancement
• Breaking Change

Related Issue(s)

Fixes #21866

Note

If this PR changes meaningfully during the course of review please update the title and description as required.