Fix AppleDevice.play_sound() : AttributeError on 'with_family'

[bobcarroll]

Currently api.iphone.play_sound() raises an attribute error. This PR sets a default value when the device isn't being created from a response dictionary.

Traceback :

Traceback (most recent call last):
  File "/Users/pollet/dev/home-assistant/core/homeassistant/components/websocket_api/commands.py", line 134, in handle_call_service
    connection.context(msg),
  File "/Users/pollet/dev/home-assistant/core/homeassistant/core.py", line 1223, in async_call
    await asyncio.shield(self._execute_service(handler, service_call))
  File "/Users/pollet/dev/home-assistant/core/homeassistant/core.py", line 1250, in _execute_service
    await self._hass.async_add_executor_job(handler.func, service_call)
  File "/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/concurrent/futures/thread.py", line 57, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/Users/pollet/dev/home-assistant/core/homeassistant/components/icloud/__init__.py", line 151, in play_sound
    device.play_sound()
  File "/Users/pollet/dev/home-assistant/core/homeassistant/components/icloud/account.py", line 408, in play_sound
    self.device.play_sound()
  File "/Users/pollet/.homeassistant/deps/lib/python/site-packages/pyicloud/services/findmyiphone.py", line 138, in play_sound
    'fmly': self.with_family
  File "/Users/pollet/.homeassistant/deps/lib/python/site-packages/pyicloud/services/findmyiphone.py", line 204, in __getattr__
    return getattr(self.content, attr)
AttributeError: 'dict' object has no attribute 'with_family'

[Quentame]

Put directly True to clientContext.fmly

I thought I removed that, thanks for fixing.

[bobcarroll]

@Quentame fixed

[Quentame]

Working fine 🎉