Message Title

The current test org.hibernate.search.test.integration.jsr352.massindexing.RestartIT provides wrong information about the index progress. This integration test aims to index 5,000 entities within 2 job executions: one normal start and one restart, where the interruption point of the first execution is the 2500th entity read and such interruption is controlled by Byteman script JobInterruptor.btm. After the start of the 2nd job execution, the index progress does not stop:

11:38:29,710 INFO  [org.hibernate.search.jsr352.massindexing.impl.steps.lucene.ProgressAggregator] (Batch Thread - 1) HSEARCH500010:

	org.hibernate.search.test.integration.jsr352.massindexing.test.common.Message: 3000/5000 works processed (60.00%).

11:38:29,710 INFO  [org.hibernate.search.jsr352.massindexing.impl.steps.lucene.ProgressAggregator] (Batch Thread - 1) HSEARCH500010:

	org.hibernate.search.test.integration.jsr352.massindexing.test.common.Message: 5800/5000 works processed (116.00%).

11:38:29,710 INFO  [org.hibernate.search.jsr352.massindexing.impl.steps.lucene.ProgressAggregator] (Batch Thread - 1) HSEARCH500010:

	org.hibernate.search.test.integration.jsr352.massindexing.test.common.Message: 8800/5000 works processed (176.00%).

...

11:38:43,258 INFO  [org.hibernate.search.jsr352.massindexing.impl.steps.lucene.ProgressAggregator] (Batch Thread - 4) HSEARCH500010:

	org.hibernate.search.test.integration.jsr352.massindexing.test.common.Message: 105001/5000 works processed (2100.02%).

Actually I'm not sure if the index progress monitor was wrong, this job has actually indexed 105,001 entities, or both. When fixing this issue, we need to: