The converter class will be used by many independent services. It should be placed in the shared library for all of them to use.
Move the ZonedDateTimeConverter to the shared library. Make sure to use the one from Requisitions: https://github.com/OpenLMIS/openlmis-requisition/blob/master/src/main/java/org/openlmis/requisition/domain/ZonedDateTimeAttributeConverter.java
Ensure that the following annotation still works properly in the Services when it is being sourced from the shared library:
Refactor these services to use this util class: Requisition, Ref Data, Auth, Notification (nothing to do in this service), Fulfillment, Template Service