Fix : Handle service changed indication properly

Fix : Handle service changed indication properly

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

[Issue#] P200504-04947
[Request] Internal
[Occurrence Version] N/A

[Problem] GATT service browsing failed.
[Cause & Measure] Ignore service indication during browsing.
 Some characteristics what is not included form the primary service is found.
 So unable to insert characteristic to GATT DB.
 Handle the indication before starting svc browsing.
[Checking Method] n/a

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

Change-Id: I809beeb51a7d88dfc0cc15b062ab8f7e372b7ccc
Signed-off-by: Wootak Jung <wootak.jung@samsung.com>