Set host to channel's target when creating a call.

	Change on 2014/12/17 by yangg <yangg@google.com>
-------------
Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=82377896

src/cpp/client/channel.cc

@@ -78,10 +78,8 @@ Status Channel::StartBlockingRpc(const RpcMethod& method,
                                  const google::protobuf::Message& request,
                                  google::protobuf::Message* result) {
   Status status;
-  grpc_call* call =
-      grpc_channel_create_call(c_channel_, method.name(),
-                               // FIXME(yangg)
-                               "localhost", context->RawDeadline());
+  grpc_call* call = grpc_channel_create_call(
+      c_channel_, method.name(), target_.c_str(), context->RawDeadline());
   context->set_call(call);
   grpc_event* ev;
   void* finished_tag = reinterpret_cast<char*>(call);

test/cpp/end2end/async_test_server.cc

@@ -90,7 +90,6 @@ void AsyncTestServer::MainLoop() {
         gpr_log(GPR_INFO, "SERVER_RPC_NEW %p", server_context);
         if (server_context) {
           EXPECT_EQ(server_context->method(), "/foo");
-          EXPECT_EQ(server_context->host(), "localhost");
           // TODO(ctiller): verify deadline
           server_context->Accept(cq_.cq());
           // Handle only one rpc at a time.