list_interfaces.py was broken
wireguard.py failed with errors.
```admin@edge:/usr/lib$ show interfaces wireguard Traceback (most recent call last):
File "/usr/libexec/vyos/completion/list_interfaces.py", line 5, in <module>
import vyos.interfaces
File "/usr/lib/python3/dist-packages/vyos/interfaces.py", line 19, in <module>
from vyos.ifconfig import Interface
File "/usr/lib/python3/dist-packages/vyos/ifconfig/__init__.py", line 27, in <module>
from vyos.ifconfig.wireguard import WireGuardIf
File "/usr/lib/python3/dist-packages/vyos/ifconfig/wireguard.py", line 21, in <module>
from vyos.interfaces import wireguard_dump
ImportError: cannot import name 'wireguard_dump' from 'vyos.interfaces' (/usr/lib/python3/dist-packages/vyos/interfaces.py)```