Comment 2 for bug 1688175

Sorry for not dig into the Nova claim before, I take back what i said, instance_claim do not have much relationship with the quota control.

After I dig into the nova instance_claim, i still not sure if we need the to claim in zun.

@hongbin, cloud you explain what will fail if we do not do claim in zun?
Does your concern is the zun compute has consumed resource from compute node and the zun api(scheduler) does not aware the consumption? and will make wrong schedule decision?