Boost beast

This commit is the beginings of attempting to transition away from
crow, and toward boost::beast.  Unit tests are passing, and
implementation appears to be slightly faster than crow.

Change-Id: Ic8d946dc7a04f514c67b1098f181eee1ced69171
diff --git a/redfish-core/lib/service_root.hpp b/redfish-core/lib/service_root.hpp
index c57d3e7..62796ee 100644
--- a/redfish-core/lib/service_root.hpp
+++ b/redfish-core/lib/service_root.hpp
@@ -35,12 +35,12 @@
         app.template get_middleware<crow::PersistentData::Middleware>()
             .system_uuid;
 
-    entityPrivileges = {{crow::HTTPMethod::GET, {}},
-                        {crow::HTTPMethod::HEAD, {}},
-                        {crow::HTTPMethod::PATCH, {{"ConfigureComponents"}}},
-                        {crow::HTTPMethod::PUT, {{"ConfigureComponents"}}},
-                        {crow::HTTPMethod::DELETE, {{"ConfigureComponents"}}},
-                        {crow::HTTPMethod::POST, {{"ConfigureComponents"}}}};
+    entityPrivileges = {{boost::beast::http::verb::get, {}},
+                        {boost::beast::http::verb::head, {}},
+                        {boost::beast::http::verb::patch, {{"ConfigureComponents"}}},
+                        {boost::beast::http::verb::put, {{"ConfigureComponents"}}},
+                        {boost::beast::http::verb::delete_, {{"ConfigureComponents"}}},
+                        {boost::beast::http::verb::post, {{"ConfigureComponents"}}}};
   }
 
  private: