Re-describe Network IP availability and usage stats response table
Re-describe Network IP availability and usage stats response table

Networking API v2.0 extensions Network IP availability and usage
stats:
http://developer.openstack.org/api-ref-networking-v2-ext.html
This patch re-describes the response table include of required value
and many parameters type.
 + Change id, tenant_id types to csapi:UUID
 + Change total_ips, userd_ips to xsd:int
 + Change required values of all parameters to be true

Change-Id: I3077c70d68db1297d30c1b18c30c78709a1c2fd1
Closes-Bug: #1563140

Tesora/tesora-api-site,openstack/api-site,Tesora/tesora-api-site,Tesora/tesora-api-site,openstack/api-site,Tesora/tesora-api-site,Tesora/tesora-api-site,Tesora/tesora-api-site,Tesora/tesora-api-site,openstack/api-site,openstack/api-site