PROG: Fixed test data. References #2035

Unit test for NaifDskShapeModel. 

Unit test for NaifDskShape. 

Default constructor. 

Construct NaifDskShapeModel object from a plate model. 

Construct NaifDskShape object from a plate model. 

Try to intersect surface at obsPos (0,0,0) and lookDir (1,1,1) 

Intersection successful?  "No" 

Construct NaifDskShapeModel object from cube labels with ShapeModel=DSK file. 

Construct NaifDskShape object from cube labels with ShapeModel=DSK file. 

Try to intersect surface at obsPos (0,0,1000) and lookDir (0,-1,-1) 

Intersection successful?      "No" 

Construct NaifDskShapeModel object from cube labels with ElevationModel=DSK file. 

Construct NaifDskShape object from cube labels with ElevationModel=DSK file. 

Try to intersect surface at obsPos (1000,0,0) and lookDir (-1,0,0) 

Intersection successful?      "Yes" 

Intersection valid?  true 

Local normal from neighbor points:    QVector(0.864171, -0.148718, 0.48072) 

================================= Error Throws ================================== 

Construct NaifDskShapeModel object from cube labels with ShapeModel=Null. 

Construct NaifDskShape object from cube labels with ShapeModel=Null. 

**USER ERROR** NAIF DSK file [Null] does not exist.

Thrown by setLocalNormalFromIntercept() - Failed to find intercept.