Use Managed Executor with Safeguard Fault Tolerance lib

We have a problem with the integration of the Safeguard Fault Tolerance
library on TomEE 8 and I need help to solve it. This is a follow up to
the original email thread, from Oct 3, in the Geronimo mailing list,
where we decided to do perform the override in the container side.

I need to override the starting point for the library, originally here:

https://github.com/apache/geronimo-safeguard/blob/master/safeguard-impl/src/main/java/org/apache/safeguard/impl/cdi/FailsafeExecutionManagerProvider.java

Because it's not using a managed executor service from TomEE... Like
this one: "java:comp/DefaultManagedScheduledExecutorService"

All this is being discussed in the dev@tomee.apache.org list under the subject "Override bean from library on TomEE"