detail logging for clock logic

:Release Notes:
Added more detail logging for logic related with time updates.

:Detailed Notes:
Added/bumped logging to info level for:
- /time/setBroadcastTime method
- /time/setSystemTime method
- /time/setSystemNetworkTime method
- /time/setTimeWithNTP method
- /clock/setTime method
- clock update process
- system time synchronization process
Fixed copyright header in Src/BroadcastTimeHandler.cpp

:Testing Performed:
verified on desktop build

:QA Notes:

:Issues Addressed:
[ANG-2221] luna-sysservice: detail logging for time

Open-webOS-DCO-1.0-Signed-off-by: Nikolay Orliuk <nikolay.orliuk@lge.com>

Change-Id: I4a8720b20ac7730eb42250b1db9b76eb924bbaed
Reviewed-on: https://g2g.palm.com/4775
Reviewed-by: DCO Verification
Reviewed-by: Nikolay Orliuk <nikolay.orliuk@lge.com>
Tested-by: Nikolay Orliuk <nikolay.orliuk@lge.com>
Reviewed-by: Anatolii Sakhnik <anatolii.sakhnik@lge.com>