
Do refactor for quota command related unit tests, remove useless code, add new tests to cover '--volume-type' and '--class' option in "quota set" command and add the volume quota fake object. Change-Id: Iaf214740e98db1bfb4c739e810bac1c5ba6e9625
Do refactor for quota command related unit tests, remove useless code, add new tests to cover '--volume-type' and '--class' option in "quota set" command and add the volume quota fake object. Change-Id: Iaf214740e98db1bfb4c739e810bac1c5ba6e9625