Tests: Update test_config_core for invalid and reserved uberdog ids.
Tests: Update test_config_core for invalid and reserved uberdog ids.

pizcogirl/Astron,blindsighttf2/Astron,pizcogirl/Astron,blindsighttf2/Astron,pizcogirl/Astron,ketoo/Astron,blindsighttf2/Astron,blindsighttf2/Astron,ketoo/Astron,pizcogirl/Astron,ketoo/Astron,ketoo/Astron