Redfish SessionService

- added node version of the SessionService implementation
- added a default timeout member and a get timeout method
  to the SessionStore class

Change-Id: I532080789b3d687208510f8b748402735ed888d8
Signed-off-by: Borawski.Lukasz <lukasz.borawski@intel.com>
diff --git a/redfish-core/include/redfish.hpp b/redfish-core/include/redfish.hpp
index e14845f..7714ab7 100644
--- a/redfish-core/include/redfish.hpp
+++ b/redfish-core/include/redfish.hpp
@@ -42,6 +42,7 @@
     nodes.emplace_back(std::make_unique<RoleCollection>(app));
     nodes.emplace_back(std::make_unique<ServiceRoot>(app));
     nodes.emplace_back(std::make_unique<NetworkProtocol>(app));
+    nodes.emplace_back(std::make_unique<SessionService>(app));
 
     for (auto& node : nodes) {
       node->getSubRoutes(nodes);