Put most of netd into the android::net namespace.

Test: netd_{unit,integration}_test pass
Test: bullhead builds, boots
Bug: 34873832
Change-Id: I0a252328041b342f9c03cd08c11a69d452b045b3
diff --git a/server/ResolverController.cpp b/server/ResolverController.cpp
index 4a0fca4..daf4ebb 100644
--- a/server/ResolverController.cpp
+++ b/server/ResolverController.cpp
@@ -40,6 +40,9 @@
 #include "ResolverController.h"
 #include "ResolverStats.h"
 
+namespace android {
+namespace net {
+
 int ResolverController::setDnsServers(unsigned netId, const char* searchDomains,
         const char** servers, int numservers, const __res_params* params) {
     if (DBG) {
@@ -246,3 +249,6 @@
     }
     dw.decIndent();
 }
+
+}  // namespace net
+}  // namespace android