Provide new runtime bean registrator for recreated module

Provide new runtime bean registrator for recreated module

After recent changes in config-manager, runtime bean registrations are not
preserved after reconfiguration of a module. This is caused because internal
jmx registrators are now properly closed. Runtime bean registrations relied
on previous, incorrect behavior.

This commit fixes the issue by recreating runtime bean registrator for each module.
However there's a possible leak if clients do not close runtime bean registrations
in their createInstance methods.

Change-Id: I37f0956effdd2a183390252615c23a90e23ebe8e
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>