Add Octavia anti-affinity parameters

This patch adds the following parameter for Octavia:

1. OctaviaAntiAffinity

The default value is 'true' as is a best practice for production
deployments.

Depends-On: https://review.opendev.org/696965/
Change-Id: I1adb886405cde6b6e0b5f25a735e36114cd1787b
(cherry picked from commit 7f8a565ea8)
(cherry picked from commit ef66a0f4f5)
(cherry picked from commit 0c7b4629e2)

puppet/services/octavia-controller.yaml

@@ -68,6 +68,10 @@ parameters:
     default: 300
     description: Seconds to wait for a port to detach from an amphora.
     type: number
+  OctaviaAntiAffinity:
+    default: true
+    description: Flag to indicate if anti-affinity feature is turned on.
+    type: boolean
 
 conditions:
   octavia_topology_unset: {equals : [{get_param: OctaviaLoadBalancerTopology}, ""]}
@@ -101,6 +105,7 @@ outputs:
             octavia::controller::connection_logging: {get_param: OctaviaConnectionLogging}
             octavia::controller::build_active_retries: {get_param: OctaviaBuildActiveRetries}
             octavia::controller::port_detach_timeout: {get_param: OctaviaPortDetachTimeout}
+            octavia::controller::enable_anti_affinity: {get_param: OctaviaAntiAffinity}
           -
             if:
             - octavia_topology_unset

releasenotes/notes/add-octavia-anti-affinity-parameters-fe9222f17b16ee1f.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    Added the Octavia anti-affinity parameters.