Autotest: Keep track of generating framework in TestTreeItem

... and TestConfiguration. This allows dropping code that
reconstruct framework ids and framework lookup by id.

Change-Id: I0bb1e6e135376e21f96b9fab7971aa097787e483
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/autotest/testtreeitem.cpp

@@ -38,8 +38,10 @@
 
 namespace Autotest {
 
-TestTreeItem::TestTreeItem(const QString &name, const QString &filePath, Type type)
-    : m_name(name),
+TestTreeItem::TestTreeItem(ITestFramework *framework, const QString &name,
+                           const QString &filePath, Type type)
+    : m_framework(framework),
+      m_name(name),
       m_filePath(filePath),
       m_type(type)
 {
@@ -355,6 +357,11 @@ inline bool TestTreeItem::modifyName(const QString &name)
     return false;
 }
 
+ITestFramework *TestTreeItem::framework() const
+{
+    return m_framework;
+}
+
 /*
  * try to find build system target that depends on the given file - if the file is no header
  * try to find the corresponding header and use this instead to find the respective target