When switching from one Rancher server to another, we want Terraform to recreate Rancher resources. This currently leads to ugly `EOF` errors. This patch resets resource Ids when they can't be found in the Rancher API.
* Vendor Rancher Go library. * Implement Rancher Provider. Starting implementation taken from https://github.com/platanus/terraform-provider-rancher Commits from jidonoso@gmail.com and raphael.pinson@camptocamp.com