Default values do not work when using multiple engine types

Description

Normally, if your Aviary model does not define a variable, the default value is used. In the case where your model using multiple engine types, and you do not specify a required variable that should be vectorized across engines (Aircraft.Engine.*, Aircraft.Nacelle.*), an error occurs. This happens because all set_input_defaults() is called on every variable in the metadata using metadata defaults, which neglects to add the vectorization needed for multiple engine types.

Example

This error can be seen when running test_bench_multiengine.py, which fails because Aircraft.Nacelle.LAMINAR_FLOW_UPPER and Aircraft.Nacelle.LAMINAR_FLOW_LOWER were not defined in the input data used

Aviary Version

latest

Relevant environment information

No response