Set hard-coded rooms order in config file

tests/test_panel.py

@@ -22,9 +22,9 @@ def build():
     heos = FakeHeos()
     cfg = SimpleNamespace(
         HEOS_HOST="127.0.0.1", HEOS_PORT=heos.port,
-        HOST_KEY="avr",
-        ROOM_KEYS=["lego_room", "living_room"],
-        TARGETS={
+        HOST_ROOM="avr",
+        GUEST_ROOMS=["lego_room", "living_room"],
+        ROOMS={
             "avr": {"label": "Home Cinema", "heos_name": "Home Cinema"},
             "lego_room": {"label": "Lego Room", "heos_name": "Lego Room"},
             "living_room": {"label": "Living Room", "heos_name": "Denon Home 200 L"},