wrap the terraform provider for grpc tests

internal/provider-terraform/main/main.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"github.com/hashicorp/terraform/builtin/providers/terraform"
+	"github.com/hashicorp/terraform/internal/grpcwrap"
+	"github.com/hashicorp/terraform/internal/tfplugin5"
+	"github.com/hashicorp/terraform/plugin"
+)
+
+func main() {
+	// Provide a binary version of the internal terraform provider for testing
+	plugin.Serve(&plugin.ServeOpts{
+		GRPCProviderFunc: func() tfplugin5.ProviderServer {
+			return grpcwrap.New(terraform.NewProvider())
+		},
+	})
+}