Move the cloud native install from `Viable` to `Complete`

Problem Statement

The cloud native install is currently at the Viable maturity level.

Viable: Used by users/customers to solve real problems

Large organizations are rapidly adopting cloud native strategies to improve speed of delivery, scalability, and efficient use of computing resources. GitLab is seeing more interest from customers wanting to install GitLab on Kubernetes. We would like to move the cloud native install all the way to Lovable, but first let's define what a Complete maturity state looks like.

Complete: Contains a competitive feature set sufficient to displace other single-purpose DevOps tools.

Reach

Impact

Confidence

Effort