IntegratorServiceImpl (https://github.com/hibernate/hibernate-orm/blob/5.4.1/hibernate-core/src/main/java/org/hibernate/integrator/internal/IntegratorServiceImpl.java) does not support adding an integrator via the following configuration via JPA persistence.xml property:

<property name="hibernate.integrator_provider" value="some.package.SomeIntegrator" />

Also discussed here in comments section:
https://vladmihalcea.com/how-to-increment-the-parent-entity-version-whenever-a-child-entity-gets-modified-with-jpa-and-hibernate

On a side-note - it also does not look like "hibernate.integrator_provider" is available in https://github.com/hibernate/hibernate-orm/blob/5.4.1/hibernate-core/src/main/java/org/hibernate/jpa/AvailableSettings.java