os_nova_host_aggregate - Fix aggregate delete with hosts (#53166)

Aggregate delete task will fail in case it has hosts within the aggregate.
As by the OpenStack, the hosts should be removed from the aggregate
prior aggregate delete.

Add remove host in case provided.

lib/ansible/modules/cloud/openstack/os_nova_host_aggregate.py

@@ -167,6 +167,9 @@ def main():
             if aggregate is None:
                 changed = False
             else:
+                if hosts:
+                    for h in hosts:
+                        cloud.remove_host_from_aggregate(aggregate.id, h)
                 cloud.delete_aggregate(aggregate.id)
                 changed = True
             module.exit_json(changed=changed)