Increment version from 2.0 to 3.0

:Release Notes:
activitymanager is now dependent on shared libraries from DB8 and PMLOG
whose versions have been incremented to V3.x

:Detailed Notes:

:Testing Performed:
Build and test on device

:QA Notes:

:Issues Addressed:

Open-webOS-DCO-1.0-Signed-off-by: Roger Stringer <roger.stringer@lge.com>

Change-Id: I13f68f5e35629b3bd78d4c83fbdc557241fa4390
Reviewed-on: https://g2g.palm.com/3483
Reviewed-by: Build Verification
Tested-by: Roger Stringer <roger.stringer@lge.com>
Reviewed-by: Maksym Sditanov <maxim.sditanov@lge.com>
Reviewed-by: Roger Stringer <roger.stringer@lge.com>