Build containerized host group dynamically

Currently, we are using some inventory variables
to determine what host groups should be considered
containerized.

This is problematic and has several edge cases.

This commit removes the variable l_containerized_host_groups
and builds a dynamic group of hosts named
'oo_hosts_containerized_managed_true' based on the value of
'containerized'

playbooks/container-runtime/private/build_container_groups.yml

@@ -0,0 +1,6 @@
+---
+- name: create oo_hosts_containerized_managed_true host group
+  hosts: oo_all_hosts:!oo_nodes_to_config
+  tasks:
+  - group_by:
+      key: oo_hosts_containerized_managed_{{ (containerized | default(False)) | ternary('true','false') }}

playbooks/container-runtime/private/config.yml

@@ -1,10 +1,7 @@
 ---
-- hosts: "{{ l_containerized_host_groups }}"
-  vars:
-    l_chg_temp: "{{ hostvars[groups['oo_first_master'][0]]['openshift_containerized_host_groups'] | default([]) }}"
-    l_containerized_host_groups: "{{ (['oo_nodes_to_config'] | union(l_chg_temp)) | join(':') }}"
-  # role: container_runtime is necessary  here to bring role default variables
-  # into the play scope.
+- import_playbook: build_container_groups.yml
+
+- hosts: oo_nodes_to_config:oo_hosts_containerized_managed_true
   roles:
     - role: container_runtime
   tasks:

playbooks/container-runtime/private/setup_storage.yml

@@ -1,5 +1,7 @@
 ---
-- hosts: "{{ l_containerized_host_groups }}"
+- import_playbook: build_container_groups.yml
+
+- hosts: oo_nodes_to_config:oo_hosts_containerized_managed_true
   vars:
     l_chg_temp: "{{ hostvars[groups['oo_first_master'][0]]['openshift_containerized_host_groups'] | default([]) }}"
     l_containerized_host_groups: "{{ (['oo_nodes_to_config'] | union(l_chg_temp)) | join(':') }}"

test/tox-inventory.txt

@@ -13,6 +13,7 @@ oo_first_etcd
 oo_etcd_hosts_to_backup
 oo_etcd_hosts_to_upgrade
 oo_etcd_to_migrate
+oo_hosts_containerized_managed_true
 oo_masters
 oo_masters_to_config
 oo_first_master
@@ -103,3 +104,6 @@ localhost
 
 [glusterfs_registry]
 localhost
+
+[oo_hosts_containerized_managed_true]
+localhost