Merge changes I282a8fc7,I5fceac93 into stable-2.11

* changes:
  Print proper name for project indexer tasks in show-queue command
  Print proper name for reindex after update tasks in show-queue command

gerrit-server/src/main/java/com/google/gerrit/server/index/ReindexAfterUpdate.java

@@ -120,6 +120,12 @@ public class ReindexAfterUpdate implements GitReferenceUpdatedListener {
             new Branch.NameKey(project, ref)));
       }
     }
+
+    @Override
+    public String toString() {
+      return "Get changes to reindex caused by " + event.getRefName()
+          + " update of project " + event.getProjectName();
+    }
   }
 
   private class Index extends Task<Void> {
@@ -138,5 +144,11 @@ public class ReindexAfterUpdate implements GitReferenceUpdatedListener {
       indexerFactory.create(executor, indexes).index(db, c);
       return null;
     }
+
+    @Override
+    public String toString() {
+      return "Index change " + id.get() + " of project "
+          + event.getProjectName();
+    }
   }
 }

gerrit-server/src/main/java/com/google/gerrit/server/index/SiteIndexer.java

@@ -269,6 +269,11 @@ public class SiteIndexer {
         }
         return null;
       }
+
+      @Override
+      public String toString() {
+        return "Index all changes of project " + project.get();
+      }
     };
   }