Ensure the test hits the hard limit

Author: tveasey

x-pack/qa/ml-native-multi-node-tests/src/test/java/org/elasticsearch/xpack/ml/integration/AutodetectMemoryLimitIT.java

@@ -62,7 +62,7 @@ public void testTooManyPartitions() throws Exception {
         long timestamp = now - 8 * bucketSpan.seconds();
         List<String> data = new ArrayList<>();
         while (timestamp < now) {
-            for (int i = 0; i < 10000; i++) {
+            for (int i = 0; i < 11000; i++) {
                 // It's important that the values used here are either always represented in less than 16 UTF-8 bytes or
                 // always represented in more than 22 UTF-8 bytes.  Otherwise platform differences in when the small string
                 // optimisation is used will make the results of this test very different for the different platforms.