Fix : GATT connection event is not delivered to bt-frwk

Fix : GATT connection event is not delivered to bt-frwk

[Model] All
[BinType] AP
[Customer] OPEN

[Issue#] N/A
[Request] Internal
[Occurrence Version] N/A

[Problem] After BLE connection established, GATT connection event
 is not delivered to bt-frwk side.
[Cause & Measure] Before emit signal, AP move to sleep status.
 Reduce timeout interval
[Checking Method] GATT connection

[Team] Basic Connection
[Developer] Injun Yang
[Solution company] Samsung
[Change Type] Specification change

Change-Id: Ic3478333845ec0994a9424d40b8cfb9fd5fe0c1d
Signed-off-by: Injun Yang <injun.yang@samsung.com>
Signed-off-by: DoHyun Pyun <dh79.pyun@samsung.com>