enlarge worker and executors

I have a test mesos cluster with 5 slaves, so at least 1 slaves will
start 2 workers. To see how many supervisor will be started, does a
supervisor only start 1 worker?

Signed-off-by: Chengwei Yang <yangchengwei@qiyi.com>
set worker cpu and memory

Signed-off-by: Chengwei Yang <yangchengwei@qiyi.com>