Merge pull request '补充了实体元数据的改动.' (#12) from bug_Model into develop

Reviewed-on: http://101.201.121.115:3000/leo/LAPP_GAAS_GFrame_BACKEND/pulls/12
Reviewed-by: louwenzhi <wenzhi.lou@le-it.com.cn>

grmi/Entity.go

@@ -5,8 +5,9 @@ type Entity struct {
 	BuildCursor  func() interface{}
 	Indicator    interface{}
 	FieldMapping map[string]Field
+	PresetKeys   []string
 }
 
-func NewEntity(tableName string, buildCursor func() interface{}, fieldMapping map[string]Field) Entity {
-	return Entity{tableName, buildCursor, buildCursor(), fieldMapping}
+func NewEntity(tableName string, buildCursor func() interface{}, fieldMapping map[string]Field, presetKeys []string) Entity {
+	return Entity{tableName, buildCursor, buildCursor(), fieldMapping, presetKeys}
 }