update .clang-format header inclusion order

Added the header inclusion order to the .clang-format file generated
these changes.

Change-Id: Ia31b21d7ea451cac0309828006bc17c27cbd5bd5
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/test/message/read.cpp b/test/message/read.cpp
index 168865a..07bc984 100644
--- a/test/message/read.cpp
+++ b/test/message/read.cpp
@@ -1,17 +1,19 @@
+#include <systemd/sd-bus-protocol.h>
+
 #include <cerrno>
-#include <gtest/gtest.h>
-#include <gmock/gmock.h>
 #include <map>
 #include <sdbusplus/exception.hpp>
 #include <sdbusplus/message.hpp>
 #include <sdbusplus/test/sdbus_mock.hpp>
 #include <set>
 #include <string>
-#include <systemd/sd-bus-protocol.h>
 #include <tuple>
 #include <unordered_map>
 #include <vector>
 
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
 namespace
 {