added sleep to allow time for replication to the alter table test

repl-tests/test-repl-alter/run.test:
  added sleep to allow time for replication

repl-tests/test-repl-alter/run.test

@@ -8,4 +8,5 @@ INSERT into test SET name='Caleb', age=1;
 ALTER TABLE test ADD id int(8) ZEROFILL AUTO_INCREMENT PRIMARY KEY;
 @test.master select * from test;
 connection slave;
-@test.master select * from test;
\ No newline at end of file
+sleep 3;
+@test.master select * from test;