created AddReportFutureVersion dbus method

New method will support CollectionTimeScope, CollectionDuration

In order to make not breaking interface changes bmcweb will switch to
AddReportFutureVersion, then AddReport will be changed to match
AddReportFutureVersion, then redfish will switch back to use AddReport,
then AddReportFutureVersion will be removed.

Tested:
  - Verified that current version of bmcweb works fine with old API

Signed-off-by: Krzysztof Grobelny <krzysztof.grobelny@intel.com>
Change-Id: I51a9b7fb2f4da5b8d2f688ccd5e93710352b1ac7
diff --git a/src/utils/labeled_tuple.hpp b/src/utils/labeled_tuple.hpp
index 795f37f..a224141 100644
--- a/src/utils/labeled_tuple.hpp
+++ b/src/utils/labeled_tuple.hpp
@@ -170,15 +170,15 @@
 };
 
 template <class... Args, class... Labels>
-void to_json(nlohmann::json& json,
-             const LabeledTuple<std::tuple<Args...>, Labels...>& tuple)
+inline void to_json(nlohmann::json& json,
+                    const LabeledTuple<std::tuple<Args...>, Labels...>& tuple)
 {
     json = tuple.to_json();
 }
 
 template <class... Args, class... Labels>
-void from_json(const nlohmann::json& json,
-               LabeledTuple<std::tuple<Args...>, Labels...>& tuple)
+inline void from_json(const nlohmann::json& json,
+                      LabeledTuple<std::tuple<Args...>, Labels...>& tuple)
 {
     tuple.from_json(json);
 }