Check and update interior and exterior surface textures for Test cCase 600 and inherited cases

[DavidGoldwasser]

See Tables 5.6 and 5.8. Guidance from @mjwitte and Tim McDowell.

Table 5-6 defines the exterior textures as rough for the opaque surfaces and very smooth for the windows and Table 5.8 defines the interior textures as smooth and very smooth.