Command line/terminal access to cluster within GitLab

Problem to solve

Executing kubectl commands for managed clusters requires users to (generally) download a provider-specific CLI as well as install kubectl locally.

Further details

Proposal

Provide command-line access to the cluster within GitLab by showing a "terminal" button (similar to what we do for pod web terminal)

Deploy a dedicated pod to access command-line and kill pod once session ends.

Permissions and Security

Currently only owners and maintainers have access to "Operations>>Kubernetes" which already provides access to master credentials for clusters. This should eliminate any concerns of being able to access the command-line and issue kubectl commands.

Documentation

What does success look like, and how can we measure that?

Links / references