add old usages to network cluster (#47185)

* add old usages to network cluster

* set default value to old usages

* rename cluster_network_service to cluster_network_entity

lib/ansible/modules/cloud/ovirt/ovirt_network.py

@@ -146,6 +146,7 @@ from ansible.module_utils.ovirt import (
     search_by_name,
     get_id_by_name,
     get_dict_of_struct,
+    get_entity
 )
 
 
@@ -213,6 +214,10 @@ class ClusterNetworksModule(BaseModule):
         super(ClusterNetworksModule, self).__init__(*args, **kwargs)
         self._network_id = network_id
         self._cluster_network = cluster_network
+        self._old_usages = []
+        self._cluster_network_entity = get_entity(self._service.network_service(network_id))
+        if self._cluster_network_entity is not None:
+            self._old_usages = self._cluster_network_entity.usages
 
     def build_entity(self):
         return otypes.Network(
@@ -220,11 +225,12 @@ class ClusterNetworksModule(BaseModule):
             name=self._module.params['name'],
             required=self._cluster_network.get('required'),
             display=self._cluster_network.get('display'),
-            usages=[
+            usages=list(set([
                 otypes.NetworkUsage(usage)
                 for usage in ['display', 'gluster', 'migration']
                 if self._cluster_network.get(usage, False)
-            ] if (
+            ] + self._old_usages))
+            if (
                 self._cluster_network.get('display') is not None or
                 self._cluster_network.get('gluster') is not None or
                 self._cluster_network.get('migration') is not None