ReplicationError is considered transient in tests

A lot of stress tests are failing because these statuses are not
considered transient. This should solve that issue.

enterprise/causal-clustering/src/test/java/org/neo4j/causalclustering/discovery/Cluster.java

@@ -60,6 +60,7 @@ import org.neo4j.graphdb.Transaction;
 import org.neo4j.graphdb.TransactionFailureException;
 import org.neo4j.graphdb.security.WriteOperationsNotAllowedException;
 import org.neo4j.helpers.AdvertisedSocketAddress;
+import org.neo4j.kernel.api.exceptions.Status;
 import org.neo4j.kernel.internal.DatabaseHealth;
 import org.neo4j.kernel.internal.GraphDatabaseAPI;
 import org.neo4j.kernel.monitoring.Monitors;
@@ -511,29 +512,34 @@ public class Cluster
         return awaitEx( supplier, notNull()::test, timeout, timeUnit );
     }
 
-    private boolean isTransientFailure( Throwable e )
+    private static boolean isTransientFailure( Throwable e )
     {
         // TODO: This should really catch all cases of transient failures. Must be able to express that in a clearer
         // manner...
-        return (e instanceof IdGenerationException) || isLockExpired( e ) || isLockOnFollower( e ) ||
-               isWriteNotOnLeader( e );
+        return (e instanceof IdGenerationException) || isLockExpired( e ) || isLockOnFollower( e ) || isWriteNotOnLeader( e ) || isUnableToReplicate( e );
 
     }
 
-    private boolean isWriteNotOnLeader( Throwable e )
+    private static boolean isWriteNotOnLeader( Throwable e )
     {
         return e instanceof WriteOperationsNotAllowedException &&
                e.getMessage().startsWith( String.format( LeaderCanWrite.NOT_LEADER_ERROR_MSG, "" ) );
     }
 
-    private boolean isLockOnFollower( Throwable e )
+    private static boolean isLockOnFollower( Throwable e )
     {
         return e instanceof AcquireLockTimeoutException &&
                (e.getMessage().equals( LeaderOnlyLockManager.LOCK_NOT_ON_LEADER_ERROR_MESSAGE ) ||
                 e.getCause() instanceof NoLeaderFoundException);
     }
 
-    private boolean isLockExpired( Throwable e )
+    private static boolean isUnableToReplicate( Throwable e )
+    {
+        return e instanceof org.neo4j.internal.kernel.api.exceptions.TransactionFailureException &&
+                ((org.neo4j.internal.kernel.api.exceptions.TransactionFailureException) e).status().equals( Status.Cluster.ReplicationFailure );
+    }
+
+    private static boolean isLockExpired( Throwable e )
     {
         return e instanceof TransactionFailureException &&
                e.getCause() instanceof org.neo4j.internal.kernel.api.exceptions.TransactionFailureException &&