TRT-2346: Fix not initializing adminRESTConfig

In MCO-1828 a regression was introduced as the
legacyPathologicalMonitorTests code migrated from the previous
legacyAlertsMonitorTests monitor test didn't properly initialize the
pointer to the adminRESTConfig, leading to wrong exception list that
doesn't match the one used before the change.

Author: pablintino

pkg/monitortests/testframework/legacytestframeworkmonitortests/pathological_events_monitortest.go

@@ -31,6 +31,7 @@ func (w *legacyPathologicalMonitorTests) PrepareCollection(ctx context.Context,
 }
 
 func (w *legacyPathologicalMonitorTests) StartCollection(ctx context.Context, adminRESTConfig *rest.Config, recorder monitorapi.RecorderWriter) error {
+	w.adminRESTConfig = adminRESTConfig
 	return nil
 }