Add transient state info

:Release Notes:
Add transient state info to method output shardInfo.

:Detailed Notes:
extended output for method shardInfo with transient state.

:Testing Performed:
tested on build

:QA Notes:
insert usb stick,
make a call and get shard id:
  luna-send -n 1 luna://com.palm.db/listActiveMedia '{}'
get info about shard:
  luna-send -f -n 1  luna://com.palm.db/shardInfo '{"shardId":"+UbK5F"}'
change transient mode:
  luna-send -f -n 1  luna://com.palm.db/setShardMode '{"shardId": "+UbK5F", "transient":true}'
verify transient mode:
  luna-send -f -n 1  luna://com.palm.db/shardInfo '{"shardId":"+UbK5F"}'

:Issues Addressed:
[GF-38800] shardInfo doesn't return 'transient' setting

Open-webOS-DCO-1.0-Signed-off-by: Igor Kuksyuk <ikuksyuk@luxoft.com>

Change-Id: I4ea0924156c4cd42b90663a9ef0f02e4a63ec0aa
Reviewed-on: https://g2g.palm.com/3470
Reviewed-by: Build Verification
Reviewed-by: Igor Kuksyuk <ikuksyuk@luxoft.com>
Tested-by: Igor Kuksyuk <ikuksyuk@luxoft.com>
Reviewed-by: Roger Stringer <roger.stringer@lge.com>