Add the quotas extension to Networking API v2.0, plus clean-up of networks, subnets, and ports wadls

Closes-Bug: #1057530

Change-Id: I195a353cbc63896e57ed7726d072ae5fe281994b
author: diane fleming
Merge "Add the quotas extension to Networking API v2.0, plus clean-up of networks, subnets, and ports wadls"