Unit test failures for MonitorActivity processor suggest it doesn't work as expected

Sometimes in slower build environments this test fails. Looking at the unit test logic suggests this test might actually be revealing a bug.

[ERROR] Failures:
[ERROR] TestMonitorActivity.testClusterMonitorActivityRestoredByOtherNodeOnPrimary:704 expected:<1> but was:<0>
[ERROR] Tests run: 1500, Failures: 1, Errors: 0, Skipped: 23