Enable init checker

clang-tidy added cppcoreguidelines-init-variables as a check, which is
something we already enforce to some extent, but getting CI to enforce
it will help reviews move faster.

Tested: Code compiles.  Noop changes.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: I7e10950de617b1d3262265572b1703f2e60b69d0
diff --git a/redfish-core/lib/managers.hpp b/redfish-core/lib/managers.hpp
index 3a955cb..ad5c5e3 100644
--- a/redfish-core/lib/managers.hpp
+++ b/redfish-core/lib/managers.hpp
@@ -1092,8 +1092,8 @@
             std::vector<double> outputs;
             for (auto& step : *steps)
             {
-                double target;
-                double out;
+                double target = 0.0;
+                double out = 0.0;
 
                 if (!redfish::json_util::readJson(step, response->res, "Target",
                                                   target, "Output", out))