OAK-11451 : fixed test failure because streams can't be used twice

Author: Rishabh Kumar

oak-security-spi/src/main/java/org/apache/jackrabbit/oak/spi/security/CompositeConfiguration.java

@@ -264,8 +264,8 @@ public Context getContext() {
     @NotNull
     @Override
     public Iterable<Monitor<?>> getMonitors(@NotNull StatisticsProvider statisticsProvider) {
-        return IteratorUtils.toIterable(StreamUtils.toStream(Iterables.transform(getConfigurations(), securityConfiguration -> securityConfiguration.getMonitors(statisticsProvider)))
-                .flatMap(StreamUtils::toStream).iterator());
+        return StreamUtils.toStream(Iterables.transform(getConfigurations(), securityConfiguration -> securityConfiguration.getMonitors(statisticsProvider)))
+                .flatMap(StreamUtils::toStream).collect(Collectors.toList());
     }
 
     private static final class Ranking {