This patch extend Octavia v2 API to access qos_policy_id from neutron.
Users can pass it as 'vip_qos_policy_id' to Octavia request body to
create/update Loadbalancers, and the vrrp ports will have the qos
abilities.
This patch modifies the Loadbalancer Post/Put request body and response
body. It also extends the 'vip' table with the new column named
'qos_policy_id' to store the qos_id from neutron.
Co-Authored-By: Reedip <reedip.banerjee@nectechnologies.in>
Change-Id: I43aba9d2ae816b1498d16da077936d6bdb62e30a