Implement nbd-proxy as a part of bmcweb

Nbd-proxy is responsible for exposing websocket endpoint in bmcweb.
It matches WS endpoints with unix socket paths using configuration
exposed on D-Bus by Virtual-Media.

Virtual-Media is then notified about unix socket availability through
mount/unmount D-Bus methods.

Currently, this feature is disabled by default.

Tested: Integrated with initial version of Virtual-Media.

Change-Id: I9c572e9841b16785727e5676fea1bb63b0311c63
Signed-off-by: Iwona Klimaszewska <iwona.klimaszewska@intel.com>
Signed-off-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com>
diff --git a/include/vm_websocket.hpp b/include/vm_websocket.hpp
index 92ccc0d..a8380a7 100644
--- a/include/vm_websocket.hpp
+++ b/include/vm_websocket.hpp
@@ -160,7 +160,8 @@
     BMCWEB_ROUTE(app, "/vm/0/0")
         .requires({"ConfigureComponents", "ConfigureManager"})
         .websocket()
-        .onopen([](crow::websocket::Connection& conn) {
+        .onopen([](crow::websocket::Connection& conn,
+                   std::shared_ptr<bmcweb::AsyncResp> asyncResp) {
             BMCWEB_LOG_DEBUG << "Connection " << &conn << " opened";
 
             if (session != nullptr)