* Ensure ssdp can callback messages that do not have an ST
Sonos sends unsolicited messages when the device reboots. We want
to capture these to ensure we can recover the subscriptions as soon
as the device reboots
* Update homeassistant/components/ssdp/__init__.py
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>