fix merge override values order for helm service

Signed-off-by: Patrick Zhao <[email protected]>

pkg/tool/helmclient/helmclient.go

@@ -208,7 +208,7 @@ func MergeOverrideValues(valuesYaml, defaultValues, overrideYaml, overrideValues
 		}
 	}
 
-	valuesMap, err := yamlutil.MergeAndUnmarshal([][]byte{imageRelatedValues, []byte(valuesYaml), []byte(defaultValues), []byte(overrideYaml)})
+	valuesMap, err := yamlutil.MergeAndUnmarshal([][]byte{[]byte(valuesYaml), []byte(defaultValues), []byte(overrideYaml), imageRelatedValues})
 	if err != nil {
 		return "", err
 	}