fixup max devies

Author: Manciukic

tests/integration_tests/functional/test_max_devices.py

@@ -34,7 +34,7 @@ def test_attach_maximum_devices(uvm_plain_any):
     Test attaching maximum number of devices to the microVM.
     """
     test_microvm = uvm_plain_any
-    test_microvm.memory_monitor = False
+    test_microvm.memory_monitor = None
     test_microvm.spawn()
 
     # The default 256mib is not enough for 94 ssh connections on aarch64.
@@ -58,7 +58,7 @@ def test_attach_too_many_devices(uvm_plain):
     Test attaching to a microVM more devices than available IRQs.
     """
     test_microvm = uvm_plain
-    test_microvm.memory_monitor = False
+    test_microvm.memory_monitor = None
     test_microvm.spawn()
 
     # Set up a basic microVM.