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/account_service.hpp b/redfish-core/lib/account_service.hpp
index 53b67a4..48872f8 100644
--- a/redfish-core/lib/account_service.hpp
+++ b/redfish-core/lib/account_service.hpp
@@ -37,12 +37,12 @@
     Node::json["Roles"]["@odata.id"] = "/redfish/v1/AccountService/Roles";
 
     entityPrivileges = {
-        {crow::HTTPMethod::GET, {{"ConfigureUsers"}, {"ConfigureManager"}}},
-        {crow::HTTPMethod::HEAD, {{"Login"}}},
-        {crow::HTTPMethod::PATCH, {{"ConfigureUsers"}}},
-        {crow::HTTPMethod::PUT, {{"ConfigureUsers"}}},
-        {crow::HTTPMethod::DELETE, {{"ConfigureUsers"}}},
-        {crow::HTTPMethod::POST, {{"ConfigureUsers"}}}};
+        {boost::beast::http::verb::get, {{"ConfigureUsers"}, {"ConfigureManager"}}},
+        {boost::beast::http::verb::head, {{"Login"}}},
+        {boost::beast::http::verb::patch, {{"ConfigureUsers"}}},
+        {boost::beast::http::verb::put, {{"ConfigureUsers"}}},
+        {boost::beast::http::verb::delete_, {{"ConfigureUsers"}}},
+        {boost::beast::http::verb::post, {{"ConfigureUsers"}}}};
   }
 
  private: