Fix a bunch of warnings

using the list of warnings from here:
https://github.com/lefticus/cppbestpractices/blob/e73393f25a85f83fed7399d8b65cb117d00b2231/02-Use_the_Tools_Available.md#L100

Seems like a good place to start, and would improve things a bit
type-wise.  This patchset attempts to correct all the issues in one
shot.

Tested:
It builds.  Will test various subsystems that have been touched

Signed-off-by: Ed Tanous <ed.tanous@intel.com>
Change-Id: I588c26440e5a97f718a0f0ea74cc84107d53aa1e
diff --git a/redfish-core/lib/health.hpp b/redfish-core/lib/health.hpp
index da4f2d9..930eaee 100644
--- a/redfish-core/lib/health.hpp
+++ b/redfish-core/lib/health.hpp
@@ -153,8 +153,7 @@
             },
             "xyz.openbmc_project.ObjectMapper",
             "/xyz/openbmc_project/object_mapper",
-            "xyz.openbmc_project.ObjectMapper", "GetSubTreePaths", "/",
-            int32_t(0),
+            "xyz.openbmc_project.ObjectMapper", "GetSubTreePaths", "/", 0,
             std::array<const char *, 1>{
                 "xyz.openbmc_project.Inventory.Item.Global"});
     }