Add to PDM handler information about active db

:Release Notes:

:Detailed Notes:
Add to mojDbLunaServicePdm information about current active databases

:Testing Performed:

:QA Notes:

:Issues Addressed:
[GF-3563] DB8 Ext: Support hot-swapping of removable database

Open-webOS-DCO-1.0-Signed-off-by: Maksym Sditanov <maxim.sditanov@lge.com>

Change-Id: I50b90057f7e53085ba12df5b0e72099116c32631
Reviewed-on: https://g2g.palm.com/3160
Reviewed-by: Build Verification
Reviewed-by: Maksym Sditanov <maxim.sditanov@lge.com>
Tested-by: Maksym Sditanov <maxim.sditanov@lge.com>
Reviewed-by: Roger Stringer <roger.stringer@lge.com>