Reset transient flag for inserded media

:Release Notes:
Reset transient flag to false for every inserted media.

:Detailed Notes:

:Testing Performed:
tested on build

:QA Notes:
- insert media
- get media info and shard id:
      luna-send -n 1 luna://com.palm.db/listActiveMedia '{}'
- mark shard as transient:
      luna-send -f -n 1  luna://com.palm.db/setShardMode '{"shardId": "<shardId>", "transient":true}'
- remove media
- insert media again
- get shard info:
      luna-send -f -n 1  luna://com.palm.db/shardInfo '{"shardId": "<shardId>"}'
transient must be false.

:Issues Addressed:
[GF-44352] Incorect behaviour when "isTransient" set for media usb stick

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

Change-Id: Ifff5dcbfb0ff83e70289a0f45815a86abc70385c
Reviewed-on: https://g2g.palm.com/3798
Reviewed-by: Build Verification
Reviewed-by: Igor Kuksyuk <ikuksyuk@luxoft.com>
Tested-by: Igor Kuksyuk <ikuksyuk@luxoft.com>
Reviewed-by: Maksym Sditanov <maxim.sditanov@lge.com>
Tested-by: Maksym Sditanov <maxim.sditanov@lge.com>