terraform: collect apiserver cert SANs and support custom endpoint
constants: add new constants for cluster configuration and custom endpoint
cloud: support apiserver cert sans and prepare for endpoint migration on AWS
config: add customEndpoint field
bootstrapper: use per-CSP apiserver cert SANs
cli: route customEndpoint to terraform and add migration for apiserver cert SANs
bootstrapper: change interface of GetLoadBalancerEndpoint to return host and port separately
* invalidate app client id field for azure and provide info
* remove TestNewWithDefaultOptions case
* fix test
* remove appClientID field
* remove client secret + rename err
* remove from docs
* otto feedback
* update docs
* delete env test in cfg since no envs set anymore
* Update dev-docs/workflows/github-actions.md
Co-authored-by: Otto Bittner <cobittner@posteo.net>
* WARNING to stderr
* fix check
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Co-authored-by: Otto Bittner <cobittner@posteo.net>