Previously neutron quota names and nova-network quota names are
mixly used and this makes the readability terrible.
We no longer supports nova-network, so it looks simple to use
neutron quota names consistently.
Neutron quota names use singular form and it is different
from nova and cinder (which adopt plural form as quota names).
Although it might be confusing, the mixed usage is much worse.
Some wrapper layer may address singular vs plural form issue,
but it can be solved later. Let's use neutron quota names
directly now to simplify the code.
blueprint make-quotas-great-again
Change-Id: Ie31414ada34cbdbd046063b512d3cef0a6e68acf
1340904d47