Resource Importability

[gberche-orange]

Support for terraform import would help TF-CF adoption when existing infrastructure are already created and need to be preserved, and start being managed by TF.

We have use cases for the following imports:

• org
• space
• broker
• domain

A workaround currently applied is to manually craft the corresponding tfstate file entries, which might be tedious and error prone.

Related tf documentation:

• https://www.terraform.io/docs/import/importability.html
• https://godoc.org/github.com/hashicorp/terraform/helper/schema#ResourceImporter

/CC @shoudusse

[gberche-orange]

Closing as won't fix, in favor of https://github.com/mevansam/terraform-provider-cf/issues/6