switch asio from standalone to boost

autotest/CMakeLists.txt

@@ -11,6 +11,7 @@ set(AT_TARGET_NAME webcc_autotest)
 # Common libraries to link.
 set(AT_LIBS
     webcc
+    ${Boost_LIBRARIES}
     jsoncpp
     GTest::GTest
     "${CMAKE_THREAD_LIBS_INIT}")

autotest/client_timeout_autotest.cc

@@ -41,7 +41,7 @@ public:
 class ClientTimeoutTest : public testing::Test {
 public:
   static void SetUpTestCase() {
-    g_server.reset(new webcc::Server{ asio::ip::tcp::v4(), kPort });
+    g_server.reset(new webcc::Server{ boost::asio::ip::tcp::v4(), kPort });
 
     g_server->Route(webcc::R{ "/sleep/(\\d+)" },
                     std::make_shared<HelloView>());