do not omit empty Attribute fields, required by Adi

common/data_structs.go

diff --git a/common/data_structs.go b/common/data_structs.go
index 77c0911..9063d4d 100644
--- a/common/data_structs.go
+++ b/common/data_structs.go
@@ -14,9 +14,8 @@
 package common
 
 type Attribute struct {
-	Name  string `json:"name,omitempty"`
-	Value string `json:"value,omitempty"`
-	Kind  string `json:"kind,omitempty"`
+	Name  string `json:"name"`
+	Value string `json:"value"`
 }
 
 type ErrorResponse struct {