Fix hotreload ftest that generates error log

2018-07-11 07:56:19,850 ERROR [AuditLogWriterPool-00,in:22,inCheckpoint:21,out:0,lastRead:1531295778611,lastTimer:1531295778460,wm:200710000200777729,loop:93,record] [org.nuxeo.lib.stream.computation.log.ComputationRunner] AuditLogWriter: Exception in processLoop: thread waiting for the response was interrupted
java.lang.RuntimeException: thread waiting for the response was interrupted
	at org.elasticsearch.client.RestClient$SyncResponseListener.get(RestClient.java:687)
	at org.elasticsearch.client.RestClient.performRequest(RestClient.java:235)
	at org.elasticsearch.client.RestClient.performRequest(RestClient.java:198)
	at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:522)
	at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:508)
	at org.elasticsearch.client.RestHighLevelClient.index(RestHighLevelClient.java:348)
	at org.nuxeo.elasticsearch.client.ESRestClient.index(ESRestClient.java:379)
	at org.nuxeo.elasticsearch.seqgen.ESUIDSequencer.getNextLong(ESUIDSequencer.java:93)
	at org.nuxeo.elasticsearch.audit.ESAuditBackend.addLogEntries(ESAuditBackend.java:483)
	at org.nuxeo.ecm.platform.audit.impl.StreamAuditWriter$AuditLogWriterComputation.writeEntriesToAudit(StreamAuditWriter.java:127)
	at org.nuxeo.ecm.platform.audit.impl.StreamAuditWriter$AuditLogWriterComputation.processTimer(StreamAuditWriter.java:96)
	at org.nuxeo.lib.stream.computation.log.ComputationRunner.lambda$processTimer$2(ComputationRunner.java:246)
	at java.util.LinkedHashMap.forEach(LinkedHashMap.java:676)
	at org.nuxeo.lib.stream.computation.log.ComputationRunner.processTimer(ComputationRunner.java:244)
	at org.nuxeo.lib.stream.computation.log.ComputationRunner.processLoop(ComputationRunner.java:193)
	at org.nuxeo.lib.stream.computation.log.ComputationRunner.run(ComputationRunner.java:152)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.InterruptedException
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1039)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
	at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:277)
	at org.elasticsearch.client.RestClient$SyncResponseListener.get(RestClient.java:683)
	... 20 more