IdStory Identity Manager

Within implementation of #1543 (Make execution of role-request async) I implemented execution of role-request via NOTIFY. It works perfectly.
But I found issue with no rollback transaction when ACC realization processor throw exception. In this case was error correctly logged in the event, but changes maked within previous processor (realization processor in core) was not rollbacked.

Reason is simple Entity event is not processed under transaction. Solution is simple too, but with big impact (minimal in the provisioning queue).

@See https://github.com/bcvsolutions/CzechIdMng/commit/785cc4ad6ede13bb36457bf0182cb2ed7ad66567