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.

bug:18252947
Change-Id: I8764cb944c293e01d99822bb52b55af7e9d77853

core/java/android/net/DhcpResults.java

@@ -200,7 +200,7 @@ public class DhcpResults extends StaticIpConfiguration {
         vendorInfo = info;
     }
 
-    public void setDomains(String domains) {
-        domains = domains;
+    public void setDomains(String newDomains) {
+        domains = newDomains;
     }
 }

core/java/android/net/StaticIpConfiguration.java

@@ -107,6 +107,7 @@ public class StaticIpConfiguration implements Parcelable {
         for (InetAddress dns : dnsServers) {
             lp.addDnsServer(dns);
         }
+        lp.setDomains(domains);
         return lp;
     }