把 twemproxy 改用 confd 產生 conf
Merge branch 'master' of https://github.com/metavige/redis-cluster-dockerfile

* 'master' of https://github.com/metavige/redis-cluster-dockerfile:
  move nutcracker.conf to nutcracker.yml 2
  move nutcracker.conf to nutcracker.yml

Conflicts:
	twemproxy/nutcracker.yml
	twemproxy/start-nutcracker.sh
remove old nutcracker files