MetricManager can cause Segfaults when re-initialized after shutdown
In OTSDAQ, it is possible for a program to call the following MetricManager functions:
However, during shutdown, any Metric Plugins defined get reset to nullptr in the metric_plugins_ list, which was not being cleared. During do_start, MetricManager attempted to dereference one of theses nullptr entries. A fix has been committed to artdaq-utilities/bugfix/MetricManager_ResetMetricPluginsDuringShutdown.