gatt-client : Notify service added event after chrcs. ready

gatt-client : Notify service added event after chrcs. ready

[Model] COMMON
[BinType] AP
[Customer] OPEN

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

[Problem] Sometimes application couldn't get characteristic when it
 receives service added event and tries to get characteristic.
[Cause & Measure] chrcs_ready is set after extended properties
 descriptor is discovered. But service added event is sent before. This
 patch sends service added event after chrcs_ready is set.
[Checking Method] Get characteristic when GattServiceAdded signal is
 received.

[Team] Basic connection
[Developer] Seungyoun Ju
[Solution company] Samsung
[Change Type] Specification change

Change-Id: If42135fa637a17c98bb3b3b1d7042375ad55f455