webos-image: db8=138

:Release Notes:
Add API for notifications about removable storages,
enable c++11 flags,
remove main db in factory-reset case.

:Detailed Notes:
1a11477 Remove main db in factory-reset case
b4c8576 Enable c++11
a09af24 Add API for attaching storages

:Testing Performed:
MiniBAT, DB8 unit tests.

:QA Notes:

:Issues Addressed:
[BHV-1835] Factory Reset : Generate a lot of leveldb files irregularly
[BHV-2215] enable c++11 in db8
[BHV-3658] [DB8]: Implement API for attached storages notifications
[BHV-5942] CCC: db8=138

Open-webOS-DCO-1.0-Signed-off-by: Oleg Yablokov <oleg.yablokov@lge.com>

Change-Id: I0424e117967f691e0ab6a0df1381b4bc73d83f5e
Reviewed-on: https://g2g.palm.com/5416
Reviewed-by: DCO Verification
Build: Oleg Yablokov <oleg.yablokov@lge.com>
Reviewed-by: Oleg Yablokov <oleg.yablokov@lge.com>
Reviewed-by: Build Verification
Tested-by: Oleg Yablokov <oleg.yablokov@lge.com>
Reviewed-by: Susan Montooth <susan.montooth@lge.com>