Fix DhcpResults.setDomain() and StaticIpConfiguration.toLinkProperties()

setDomain() and toLinkProperties() were not setting the domains.
The setDomain() bug affected Wifi and I believe the toLinkProperties()
bug affected Ethernet and Bluetooth reverse-tethering.

(cherry picked from commit c53113b37f33c7ed19660c8ec5bfd578e8bb5409)

bug:18252947
Change-Id: I6235fcd6b875aee516efbb5f880db1a99380355b
2 files changed