added seprate auditable in entity

src/main/java/com/billpaymentservice/bbps/entites/InterchangeFeeConf.java

@@ -20,7 +20,7 @@ import lombok.Setter;
 @Setter
 @Entity
 @Table(name = "interchange_fee_conf")
-public class InterchangeFeeConf {
+public class InterchangeFeeConf extends Auditable {
 
     @Id
     @GeneratedValue(strategy = GenerationType.IDENTITY)
@@ -63,4 +63,4 @@ public class InterchangeFeeConf {
     @ManyToOne
     @JoinColumn(name = "biller_id", nullable = false)
     private BillerDetails biller;
-}
+}