Fix 2.4/5 wifi roaming.

The redesign of wifi ip address optaining assumed we would never
go from have-ip -> have-ip, ie we must lose our ip config before we can
gain an ip config.  Unfortunately at least one condition does just this:
  Our inter-band roaming
To leave OBTAINING_IP_ADDRESS we need to tweak the code to generate
the success signal even if the new address is the same.

bug:16269674
Change-Id: I340b24839565fa62fd3c7d9d373695d1d4007412
1 file changed
tree: 2afee96ab440073f482f94630a3968620c133290
  1. service/