project_id missing from Connection API resource

[t0mk]

While wokring on Fabric Service Token support in the provider, I realized it's not possible to find out project ID from existing Dedicated Connection API resource. Connection resource is created by POST to /projects/UUID/connection. Terraform resource metal_connection then needs to know the project ID in order to create the connection. TF provider also needs to be able to get all the parameters (it just needs it) from API.

I can get the project ID for Shared Connection from virtual circuits on Connection Ports, but for Dedicated connections, there's no virtual circuits on the ports. It would be better if project href is present in the Connection resource.

This is a blocker for Fabric Service Token (and also Connection) support in the Terraform provider:
equinix/terraform-provider-metal#207

[t0mk]

This is an API bug @displague please add the label.

[displague]

I believe POST /organizations/{id}/connection does not require a project_id for Dedicated connections.

If packngo offered a second function or logic to change endpoints based on project_id being specified then Terraform would not need a project_id in these cases.

When importing a connection, if the port is dedicated, a project_id should not be required. We can make this optional in TF.

How does this sound, @t0mk?