Add support Octavia network interface

For now, we use api interface/network for Octavia.

This change will make more flexible for Octavia deployment
with Kolla when we want to use another network for managing
amphora instances (config, health check, clean up)

Change-Id: Ief12f1f8b6c7d3974932e6320af95bb58d46bdb9
Co-Authored-By: Duc Nguyen Cong <ducnc7@viettel.com.vn>
Closes-Bug: #1791207

ansible/group_vars/all.yml

@@ -158,9 +158,11 @@ api_interface: "{{ network_interface }}"
 storage_interface: "{{ network_interface }}"
 cluster_interface: "{{ network_interface }}"
 tunnel_interface: "{{ network_interface }}"
+octavia_network_interface: "{{ api_interface }}"
 bifrost_network_interface: "{{ network_interface }}"
 dns_interface: "{{ network_interface }}"
 tunnel_interface_address: "{{ hostvars[inventory_hostname]['ansible_' + tunnel_interface]['ipv4']['address'] }}"
+octavia_network_interface_address: "{{ hostvars[inventory_hostname]['ansible_' + octavia_network_interface]['ipv4']['address'] }}"
 
 # Valid options are [ openvswitch, linuxbridge, vmware_nsxv, vmware_nsxv3, vmware_dvs, opendaylight ]
 neutron_plugin_agent: "openvswitch"

ansible/roles/octavia/templates/octavia.conf.j2

@@ -51,8 +51,8 @@ memcached_servers = {% for host in groups['memcached'] %}{{ hostvars[host]['ansi
 
 [health_manager]
 bind_port = {{ octavia_health_manager_port }}
-bind_ip = {{ api_interface_address }}
-controller_ip_port_list = {{ api_interface_address }}:{{ octavia_health_manager_port }}
+bind_ip = {{ octavia_network_interface_address }}
+controller_ip_port_list = {{ octavia_network_interface_address }}:{{ octavia_health_manager_port }}
 heartbeat_key =insecure
 
 [controller_worker]

etc/kolla/globals.yml

@@ -92,6 +92,7 @@ kolla_internal_vip_address: "10.10.10.254"
 #cluster_interface: "{{ network_interface }}"
 #tunnel_interface: "{{ network_interface }}"
 #dns_interface: "{{ network_interface }}"
+#octavia_network_interface: "{{ api_interface }}"
 
 # This is the raw interface given to neutron as its external network port. Even
 # though an IP address can exist on this interface, it will be unusable in most

releasenotes/notes/add-octavia-network-interface-4e54077c1ca2a2f4.yaml

@@ -0,0 +1,3 @@
+---
+features:
+  - Add support specific Octavia network interface.