[hca] Pin fedora to 32 until new greenlet release

Eventlet used by many openstack packages depends on greenlet which does
not have a pip release supported by Python 3.9 (default Python version
on Fedora 33). Therefore, pin Fedora to version 32 until new greenlet
release is cut which includes the required fix [0].

Also update default heat_container_agent_tag to victoria-dev.

[0] https://github.com/python-greenlet/greenlet/pull/161

Change-Id: Ice75ae880925cd15c096eb6d1cdabf7f802bccde
Story: 2007264
Task: 39941

doc/source/user/index.rst

@@ -1336,7 +1336,9 @@ _`heat_container_agent_tag`
   This label allows users to select `a specific heat_container_agent
   version, based on its container tag
   <https://hub.docker.com/r/openstackmagnum/heat-container-agent/tags/>`_.
-  Train-default: train-dev
+  Train-default: ussuri-dev
+  Ussuri-default: ussuri-dev
+  Victoria-default: victoria-dev
 
 _`kube_dashboard_enabled`
   This label triggers the deployment of the kubernetes dashboard.

dockerfiles/heat-container-agent/Dockerfile

@@ -1,4 +1,4 @@
-FROM fedora:rawhide
+FROM fedora:32
 
 ARG ARCH=x86_64
 

magnum/drivers/k8s_fedora_atomic_v1/templates/kubecluster.yaml

@@ -670,7 +670,7 @@ parameters:
   heat_container_agent_tag:
     type: string
     description: tag of the heat_container_agent system container
-    default: ussuri-dev
+    default: victoria-dev
 
   keystone_auth_enabled:
     type: boolean

magnum/drivers/k8s_fedora_coreos_v1/templates/kubecluster.yaml

@@ -678,7 +678,7 @@ parameters:
   heat_container_agent_tag:
     type: string
     description: tag of the heat_container_agent system container
-    default: ussuri-dev
+    default: victoria-dev
 
   keystone_auth_enabled:
     type: boolean

playbooks/container-builder-vars.yaml

@@ -4,7 +4,7 @@ magnum_repository: openstackmagnum
 
 magnum_images:
   - name: heat-container-agent
-    tag: ussuri-dev
+    tag: victoria-dev
 
 kubernetes_versions:
   - version: v1.15.12