Framework: add the scan_id parameter of the command SCAN

if a hidden AP is disabled by framework, wpa_supplicant will never
scan it, so add this parameter to tell wpa_supplicant to scan it.
This parameter contain all ID that should be scan.

CRs-Fixed: 685236
Change-Id: I1a70b2641eff0d1af78b09eeabb0ac84f115d8c6
Wifi: Fix 2 ip addresses issue

Invoking the function clearInterfaceAddresses to clear
the initial IP first when change the "IP Settings"
for the select AP.

Change-Id: I38f6614e66cc3cf8d84e03c19d2d4badb1b16108
CRs-Fixed: 683307