Add ansatz parameter to the objective function

[garrison]

This seems reasonable, but I haven't developed a strong rationale for it yet. Another candidate to add is simulation_settings, but in some places that is called settings.

[coveralls]

Pull Request Test Coverage Report for Build 11669945803

Details

• 2 of 3 (66.67%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.1%) to 95.253%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
qiskit_addon_aqc_tensor/objective.py	2	3	66.67%

Totals
Change from base Build 11669798438:	-0.1%
Covered Lines:	602
Relevant Lines:	632

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💛 - Coveralls