Move over to upstream c++ style

This patchset moves bmcweb over to the upstream style naming
conventions for variables, classes, and functions, as well as imposes
the latest clang-format file.

This changeset was mostly built automatically by the included
.clang-tidy file, which has the ability to autoformat and auto rename
variables.  At some point in the future I would like to see this in
greater use, but for now, we will impose it on bmcweb, and see how it
goes.

Tested: Code still compiles, and appears to run, although other issues
are possible and likely.

Change-Id: If422a2e36df924e897736b3feffa89f411d9dac1
Signed-off-by: Ed Tanous <ed.tanous@intel.com>
diff --git a/include/dbus_singleton.hpp b/include/dbus_singleton.hpp
index e6be81b..a4a16bb 100644
--- a/include/dbus_singleton.hpp
+++ b/include/dbus_singleton.hpp
@@ -4,7 +4,7 @@
 
 namespace mapbox {
 template <typename T, typename... Types>
-const T* get_ptr(const mapbox::util::variant<Types...>& v) {
+const T* getPtr(const mapbox::util::variant<Types...>& v) {
   if (v.template is<std::remove_const_t<T>>()) {
     return &v.template get_unchecked<std::remove_const_t<T>>();
   } else {
@@ -15,7 +15,7 @@
 
 namespace crow {
 namespace connections {
-static std::shared_ptr<sdbusplus::asio::connection> system_bus;
+static std::shared_ptr<sdbusplus::asio::connection> systemBus;
 
 }  // namespace connections
 }  // namespace crow