Logging: add a global storage dump method

src/libcalamares/GlobalStorage.cpp

@@ -18,6 +18,8 @@
 
 #include "GlobalStorage.h"
 
+#include "utils/Logger.h"
+
 #ifdef WITH_PYTHON
 #include "PythonHelper.h"
 
@@ -80,6 +82,15 @@ GlobalStorage::value( const QString& key ) const
     return m.value( key );
 }
 
+void
+GlobalStorage::debugDump() const
+{
+    for ( auto it = m.cbegin(); it != m.cend(); ++it )
+    {
+        cDebug() << it.key() << '\t' << it.value();
+    }
+}
+
 } // namespace Calamares
 
 #ifdef WITH_PYTHON

src/libcalamares/GlobalStorage.h

@@ -57,6 +57,8 @@ public:
     int remove( const QString& key );
     QVariant value( const QString& key ) const;
 
+    void debugDump() const;
+
 signals:
     void changed();