HBASE-21244 Skip persistence when retrying for assignment related procedures

hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/TransitRegionStateProcedure.java

@@ -329,6 +329,7 @@ public class TransitRegionStateProcedure
         backoff / 1000, this, regionNode.toShortString(), e);
       setTimeout(Math.toIntExact(backoff));
       setState(ProcedureProtos.ProcedureState.WAITING_TIMEOUT);
+      skipPersistence();
       throw new ProcedureSuspendedException();
     }
   }

hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/ReopenTableRegionsProcedure.java

@@ -122,6 +122,7 @@ public class ReopenTableRegionsProcedure
           regions.size(), tableName, backoff / 1000);
         setTimeout(Math.toIntExact(backoff));
         setState(ProcedureProtos.ProcedureState.WAITING_TIMEOUT);
+        skipPersistence();
         throw new ProcedureSuspendedException();
       default:
         throw new UnsupportedOperationException("unhandled state=" + state);