Fix bit ordering and probabilities of samples in optimization_algorithm.py (backport #97)

[mergify]

This is an automatic backport of pull request #97 done by Mergify.
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Changes to be committed:
	modified:   .pylintdict
	modified:   qiskit_optimization/problems/quadratic_program.py
	new file:   releasenotes/notes/fix-bit-ordering-e807ec9f4b206ec3.yaml

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   qiskit_optimization/algorithms/grover_optimizer.py
	both modified:   qiskit_optimization/algorithms/optimization_algorithm.py
	both modified:   test/algorithms/test_grover_optimizer.py
	both modified:   test/algorithms/test_min_eigen_optimizer.py

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[t-imamichi]

This may need #130. I ask @a-matsuo to confirm it.

[t-imamichi]

This PR needs to merge #132