Lots of performance improvements

(In the voice of the kid from sixth sense) I see string copies...

Apparently there are a lot of places we make unnecessary copies. This
fixes all of them.

Not sure how to split this up into smaller patches, or if it even needs
split up. It seems pretty easy to review to me, because basically every
diff is identical.

Change-Id: I22b4ae4f96f7e4082d2bc701098a04f7bed95369
Signed-off-by: Ed Tanous <ed@tanous.net>
Signed-off-by: Wludzik, Jozef <jozef.wludzik@intel.com>
diff --git a/include/obmc_console.hpp b/include/obmc_console.hpp
index 06df7fd..020ef91 100644
--- a/include/obmc_console.hpp
+++ b/include/obmc_console.hpp
@@ -108,7 +108,7 @@
         .privileges({"ConfigureComponents", "ConfigureManager"})
         .websocket()
         .onopen([](crow::websocket::Connection& conn,
-                   std::shared_ptr<bmcweb::AsyncResp>) {
+                   const std::shared_ptr<bmcweb::AsyncResp>&) {
             BMCWEB_LOG_DEBUG << "Connection " << &conn << " opened";
 
             sessions.insert(&conn);