Previously, resources without explicit provider configuration (i.e. a
`provider =` attribute) would be assigned a default provider based upon
the resource type. For example, a resource `foo_bar` would be assigned
provider `hashicorp/foo`.
This behaviour did not work well with community or partner providers,
with sources configured in `terraform.required_providers` blocks. With
the following configuration:
terraform {
required_providers {
foo = {
source = "acme/foo"
}
}
}
resource foo_bar "a" { }
the resource would be configured with the `hashicorp/foo` provider.
This commit fixes this implied provider behaviour. First we look for a
provider with local name matching the resource type in the module's
required providers map. If one is found, this provider is assigned to
the resource. Otherwise, we still fall back to a default provider.
Alisdair McDiarmid