BUG-1018 Implement BackwardsCompatible BI broker data notifications

Finish support for notifying BI data change listeners in backwards compatible broker.

Change-Id: I221a1e6937c8f9c493444afd0756e6c23fd4b18f
Signed-off-by: Maros Marsalek <mmarsale@cisco.com>
Merge "BUG-1018 Implement BackwardsCompatible BI broker data notifications"