Use new API - getIpSecNetIdRange() in IpSecService

Use new API - getIpSecNetIdRange() to get the network ID range
of IPSec tunnel interface.

Bug: 172183305
Test: atest FrameworksNetTests:IpSecServiceTest
Change-Id: Ib80f814f991e9f000a68f5c539d15d97cf56930e
1 file changed