AutoTest: Merge settings and tools hierarchies [2/2]

Renaming files to match class names.

Change-Id: I3d75a79a5ad8e9d1c132530cbcc6973efc6dbadf
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/autotest/qtest/qttestconfiguration.cpp

@@ -3,11 +3,10 @@
 
 #include "qttestconfiguration.h"
 
+#include "qttestframework.h"
 #include "qttestoutputreader.h"
-#include "qttestsettings.h"
 #include "qttest_utils.h"
 
-#include "../itestframework.h"
 #include "../testsettings.h"
 
 #include <utils/algorithm.h>