SystemMonitorTaskManager::getIncidentStatus() fails because subsequent call to systemMonitorUtility::getIncidentStatus() doesn't exist

Description

This code will fail as systemMonitorUtility::getIncidentStatus() doesn't exist.

public function getIncidentStatus($event_id) {
    return $this->systemMonitorUtility->getIncidentStatus($event_id);
  }

Acceptance Criteria

* Method call is updated
* Phpunit tests to cover method