Model binary is not correctly resolved

[aaraney]

Related to #85

ngen-cal/python/ngen_cal/src/ngen/cal/agent.py

Line 83 in 141948b

self._model = Model(model=model_conf, binary=resolved_binary)

binary is not a field on Model, so this is a no-op.

Fix:

Check if binary is an absolute path and resolve if it is. This still allows advanced use of the binary field.