add jsonalias

Author: ubamrein

ch-covidcertificate-backend-transformation/ch-covidcertificate-backend-transformation-model/src/main/java/ch/admin/bag/covidcertificate/backend/transformation/model/CertLightPayload.java

@@ -3,6 +3,8 @@
 import ch.ubique.openapi.docannotations.Documentation;
 import javax.validation.constraints.NotNull;
 
+import com.fasterxml.jackson.annotation.JsonAlias;
+
 public class CertLightPayload {
 
     @Documentation(
@@ -13,6 +15,7 @@ public class CertLightPayload {
 
     @Documentation(description = "Base-64-encoded png image of the qr-code")
     @NotNull
+    @JsonAlias({"qrCode", "qrcode"})
     private String qrcode;
 
     public String getPayload() {