b3202c3283
ML2 provider networks partial specs let admins choose some provider network attributes and let neutron choose remaining attributes. This change provides the implementation for VLAN provider networks. In practice, for VLAN provider networks provider:physical_network and provider:segmentation_id choices can be delegated to neutron, in such case neutron will try to find a network in tenant network pools which respects provided provider attributes. DocImpact Related to blueprint provider-network-partial-specs Partial-Bug: #1330562 Change-Id: I2c52c71167edaa153b2e04681273e2f1be8d03aa