fix: handle ConnectionRefusedError

[bdraco]

Fixes

2022-09-26 00:34:47.797 ERROR (MainThread) [homeassistant.setup] Error during setup of component bluetooth
Traceback (most recent call last):
  File "/root/home-assistant/homeassistant/setup.py", line 235, in _async_setup_component
    result = await task
  File "/root/home-assistant/homeassistant/components/bluetooth/__init__.py", line 284, in async_setup
    await manager.async_setup()
  File "/root/home-assistant/homeassistant/components/bluetooth/manager.py", line 220, in async_setup
    history = await async_load_history_from_system()
  File "/root/home-assistant/homeassistant/components/bluetooth/util.py", line 31, in async_load_history_from_system
    await bluez_dbus.load()
  File "/root/home-assistant/venv/lib/python3.9/site-packages/bluetooth_adapters/__init__.py", line 31, in load
    self._managed_objects = await get_dbus_managed_objects()
  File "/root/home-assistant/venv/lib/python3.9/site-packages/bluetooth_adapters/dbus.py", line 49, in get_dbus_managed_objects
    results = await _get_dbus_managed_objects()
  File "/root/home-assistant/venv/lib/python3.9/site-packages/bluetooth_adapters/dbus.py", line 55, in _get_dbus_managed_objects
    bus = await MessageBus(
  File "/root/home-assistant/venv/lib/python3.9/site-packages/dbus_fast/aio/message_bus.py", line 162, in __init__
    super().__init__(bus_address, bus_type, ProxyObject)
  File "/root/home-assistant/venv/lib/python3.9/site-packages/dbus_fast/message_bus.py", line 98, in __init__
    self._setup_socket()
  File "/root/home-assistant/venv/lib/python3.9/site-packages/dbus_fast/message_bus.py", line 635, in _setup_socket
    raise err
  File "/root/home-assistant/venv/lib/python3.9/site-packages/dbus_fast/message_bus.py", line 608, in _setup_socket
    self._sock.connect(filename)
ConnectionRefusedError: [Errno 111] Connection refused

[codecov]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage 👍

Coverage data is based on head (2ee321a) compared to base (264d63a).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #19   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines          120       125    +5     
  Branches        23        25    +2     
=========================================
+ Hits           120       125    +5     

Impacted Files	Coverage Δ
src/bluetooth_adapters/__init__.py	100.00% <100.00%> (ø)
src/bluetooth_adapters/dbus.py	100.00% <100.00%> (ø)

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.