fix include names

cppcheck isn't smart enough to recognize these are c++ headers, not c
headers.  Considering we're already inconsistent about our naming, it's
easier to just be consistent, and move the last few files to use .hpp
instead of .h.

Tested:
Code builds, no changes.

Signed-off-by: Ed Tanous <ed@tanous.net>
Change-Id: Ic348d695f8527fa4a0ded53f433e1558c319db40
diff --git a/redfish-core/include/privileges.hpp b/redfish-core/include/privileges.hpp
index c3a88d5..e9a24f7 100644
--- a/redfish-core/include/privileges.hpp
+++ b/redfish-core/include/privileges.hpp
@@ -15,10 +15,9 @@
 */
 #pragma once
 
-#include <logging.h>
-
 #include <boost/beast/http/verb.hpp>
 #include <boost/container/flat_map.hpp>
+#include <logging.hpp>
 
 #include <array>
 #include <bitset>