Fixes after HTTP client changes (#24)

Author: apolukhin

src/main.cpp

@@ -1,5 +1,5 @@
 #include <userver/clients/dns/component.hpp>
-#include <userver/clients/http/component.hpp>
+#include <userver/clients/http/component_list.hpp>
 #include <userver/components/minimal_server_component_list.hpp>
 #include <userver/server/handlers/ping.hpp>
 #include <userver/server/handlers/tests_control.hpp>
@@ -45,8 +45,7 @@ int main(int argc, char* argv[]) {
                               .Append<userver::components::TestsuiteSupport>()
                               .Append<real_medium::cache::articles_cache::ArticlesCache>()
                               .Append<real_medium::cache::comments_cache::CommentsCache>()
-                              .Append<userver::components::HttpClientCore>()
-                              .Append<userver::components::HttpClient>()
+                              .AppendComponentList(userver::clients::http::ComponentList())
                               .Append<userver::components::Postgres>("realmedium-database")
                               .Append<userver::clients::dns::Component>()  // real_medium::handlers::users_login::post
                               .Append<userver::server::handlers::TestsControl>()