fix BulkActionTest

2018-10-23 04:31:52,589 [setPropertiesPool-01,in:2,inCheckpoint:2,out:2,lastRead:1540269112000,lastTimer:0,wm:201886153047539713,loop:38,checkpoint] WARN  [SetPropertiesAction$SetPropertyComputation] Cannot save document: d85ec659-a523-4e52-8715-99bb5de03c49
org.nuxeo.ecm.core.api.PropertyException: Cannot set property on a version: dc:description
	at org.nuxeo.ecm.core.storage.BaseDocument.checkReadOnlyIgnoredWrite(BaseDocument.java:315) ~[nuxeo-core-storage-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.storage.BaseDocument.writeComplexProperty(BaseDocument.java:827) ~[nuxeo-core-storage-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.storage.BaseDocument.writeComplexProperty(BaseDocument.java:793) ~[nuxeo-core-storage-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.storage.sql.coremodel.SQLDocumentLive.writeDocumentPart(SQLDocumentLive.java:177) ~[nuxeo-core-storage-sql-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.api.DocumentModelFactory.writeDocumentModel(DocumentModelFactory.java:231) ~[nuxeo-core-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.api.AbstractSession.writeModel(AbstractSession.java:374) ~[nuxeo-core-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.api.AbstractSession.saveDocument(AbstractSession.java:1594) ~[nuxeo-core-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.bulk.action.SetPropertiesAction$SetPropertyComputation.compute(SetPropertiesAction.java:78) ~[nuxeo-core-bulk-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.bulk.action.computation.AbstractBulkComputation.lambda$processBatchOfDocuments$0(AbstractBulkComputation.java:111) ~[nuxeo-core-bulk-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.runtime.transaction.TransactionHelper.lambda$runInTransaction$3(TransactionHelper.java:569) ~[nuxeo-runtime-jtajca-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.runtime.transaction.TransactionHelper.runInTransaction(TransactionHelper.java:589) [nuxeo-runtime-jtajca-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.runtime.transaction.TransactionHelper.runInTransaction(TransactionHelper.java:569) [nuxeo-runtime-jtajca-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.bulk.action.computation.AbstractBulkComputation.processBatchOfDocuments(AbstractBulkComputation.java:106) [nuxeo-core-bulk-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.ecm.core.bulk.action.computation.AbstractBulkComputation.processRecord(AbstractBulkComputation.java:85) [nuxeo-core-bulk-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.lib.stream.computation.log.ComputationRunner.processRecord(ComputationRunner.java:285) [nuxeo-stream-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.lib.stream.computation.log.ComputationRunner.processLoop(ComputationRunner.java:194) [nuxeo-stream-10.3-SNAPSHOT.jar:?]
	at org.nuxeo.lib.stream.computation.log.ComputationRunner.run(ComputationRunner.java:152) [nuxeo-stream-10.3-SNAPSHOT.jar:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_181]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_181]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_181]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_181]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]