Update sdk's testrequest with connection value

sdk/logical/testing.go

@@ -9,15 +9,17 @@ import (
 
 	log "github.com/hashicorp/go-hclog"
 	"github.com/hashicorp/vault/sdk/helper/logging"
+	"github.com/hashicorp/vault/sdk/logical"
 )
 
 // TestRequest is a helper to create a purely in-memory Request struct.
 func TestRequest(t testing.T, op Operation, path string) *Request {
 	return &Request{
-		Operation: op,
-		Path:      path,
-		Data:      make(map[string]interface{}),
-		Storage:   new(InmemStorage),
+		Operation:  op,
+		Path:       path,
+		Data:       make(map[string]interface{}),
+		Storage:    new(InmemStorage),
+		Connection: &logical.Connection{},
 	}
 }