Debugger: UseDebugImage for QDir dumper test

Should work without, but doesnt with LLDB.

Change-Id: I32cdd8e5c73d21d837772be83087dc065698db30
Reviewed-by: hjk <hjk121@nokiamail.com>
Debugger: Disable QStandardItemModel dumper test for LLDB

The dumper is far from portable, make the test pass for now.

Change-Id: I52cdd8e5c73d21d837772be83087dc065698db30
Reviewed-by: hjk <hjk121@nokiamail.com>