Port quota API into v3 part2

This patch contains the changes required to adapt the service
extension and the corresponding unittest to the v3 framework

Partially implements bp v3-api-extension-versioning

Change-Id: If5438d5bef5da1832e81c0b80523f9f419d5e3d5
Merge remote-tracking branch 'm_src_repo/citrix-fixes' into build-temp