Support for remote EJB invocation on WildFly

[tobiasstadler]

Is your feature request related to a problem?

We have some applications that communicate via remote EJB invocations.

Describe the solution you'd like

It would be nice if an invocation of a remote EJB creates a span on the client and a child transaction on the server.

Describe alternatives you've considered

None.

Additional context

We are using WildFly, so support for WildFly is sufficient for us.

[tobiasstadler]

I created an external plugin which can be found here: https://github.com/tobiasstadler/apm-wildfly-ejb-plugin