Equinix Metal - removal of "facilities" API support in favor of "metro" API

[vielmetti]

What happened?

With this change, any system that's provisioned specifying a facility will get a 422 error
from the API. (From reading the code at

https://github.com/kubermatic/kubermatic/blob/main/pkg/machine/provider/equinixmetal.go

it appears that the facility support is still here; I don't know if it's always used.)

How to reproduce the issue?

Specific an Equinix Metal facility in the configuration; it should fail

kubermatic/pkg/machine/provider/equinixmetal.go

Line 101 in 20e551f

if len(config.Facilities) == 0 {

(I don't have a better reproducer than that, but that's the line you want to hit)

How is your environment configured?

• KKP version: any
• Shared or separate master/seed clusters?: any

Provide your KKP manifest here (if applicable)

# paste manifest here

What cloud provider are you running on?

Equinix Metal

What operating system are you running in your user cluster?

any

Additional information

Happy to provide a test environment to validate if needed, this is from inspection of the code. I don't
know how things will error out.