Fix: multiple gatt server apps send response for read/write request

Fix: multiple gatt server apps send response for read/write request

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

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

[Problem] gatt client receive ATT error for read/write request.
[Cause & Measure] If several gatt server apps is running, all apps send respone.
 One of them, send ATT error.
[Checking Method] Multiple gatt server app > read/write request on client

[Team] Convergence BT
[Developer] Injun Yang
[Solution company] Samsung
[Change Type] Specification change

Change-Id: I2a48d70ef988e8a507df407d9100f7b1ccf32251
Signed-off-by: Wootak Jung <wootak.jung@samsung.com>