Use session dbus mocks for all tests (#4198)

* Use session dbus mocks for all tests

* func instead of fn for pylint

tests/dbus_service_mocks/agent_apparmor.py

@@ -0,0 +1,40 @@
+"""Mock of OS Agent AppArmor dbus service."""
+
+from dbus_fast.service import PropertyAccess, dbus_property
+
+from .base import DBusServiceMock, dbus_method
+
+BUS_NAME = "io.hass.os"
+
+
+def setup(object_path: str | None = None) -> DBusServiceMock:
+    """Create dbus mock object."""
+    return AppArmor()
+
+
+# pylint: disable=invalid-name
+
+
+class AppArmor(DBusServiceMock):
+    """AppArmor mock.
+
+    gdbus introspect --system --dest io.hass.os --object-path /io/hass/os/AppArmor
+    """
+
+    object_path = "/io/hass/os/AppArmor"
+    interface = "io.hass.os.AppArmor"
+
+    @dbus_property(access=PropertyAccess.READ)
+    def ParserVersion(self) -> "s":
+        """Get ParserVersion."""
+        return "2.13.2"
+
+    @dbus_method()
+    def LoadProfile(self, arg_0: "s", arg_1: "s") -> "b":
+        """Load profile."""
+        return True
+
+    @dbus_method()
+    def UnloadProfile(self, arg_0: "s", arg_1: "s") -> "b":
+        """Unload profile."""
+        return True