Adds availability zone support for Nova V3 API

Adds support and tests for the os-availability-zones
extension for the Nova V3 API. Also implements
sorting for zone host display which was applied
to the v1_1 version, but not the v3 version in
I9ab25ef52d6d19b45a39f04cbcde864ee225b4cc

Partially implements blueprint v3-api

Change-Id: I8daa2503a2dc8767e9157bdfa6c9adaedfc8f3c0
Adds first part of quotas support for Nova V3 API

Adds support and tests for the os-quotas extension
for the Nova V3 API. Note that compared to the V2
version this removes the ability to set quotas
which are not relevant to the V3 API (eg injected
file quotas are not relevant because the
os-personalities extension has been removed)

Partially implements blueprint v3-api

Change-Id: Ifa1c77428424bedf7fb88ef6d7b3843376799d24
Merge "Adds availability zone support for Nova V3 API"
Merge "Adds first part of quotas support for Nova V3 API"