Add scripts/cluster.py
Add scripts/cluster.py

This script starts a coordinator, some masters, and optionally some
backups.  It has a pluggable interface so it can be used to run a
variety of clients.

jblomer/ramcloud,DavidLi2010/ramcloud,anirajk/RAMCloud,anirajk/RAMCloud,IMCG/RamCloud,SMatsushi/RAMCloud,y-higuchi/ramcloud,behnamm/cs244b_project,utah-scs/RAMCloud,taschik/ramcloud,matrix207/RAMCloud,mrdiegoa/ramcloud,y-higuchi/ramcloud,behnamm/cs244b_project,IMCG/RamCloud,mrdiegoa/ramcloud,taschik/ramcloud,DavidLi2010/ramcloud,jcarreira/ramcloud,Frank-Wu/RamCloud,taschik/ramcloud-load-manager,IMCG/RamCloud,SMatsushi/RAMCloud,rstutsman/RAMCloud,DavidLi2010/ramcloud,mrdiegoa/ramcloud,SMatsushi/RAMCloud,anirajk/RAMCloud,matrix207/RAMCloud,alexandermerritt/ramcloud,SMatsushi/RAMCloud,utah-scs/RAMCloud,Frank-Wu/RamCloud,anirajk/RAMCloud,behnamm/cs244b_project,Frank-Wu/RamCloud,mrdiegoa/ramcloud,QingkaiLu/RAMCloud,mrdiegoa/ramcloud,matrix207/RAMCloud,taschik/ramcloud,alexandermerritt/ramcloud,alexandermerritt/ramcloud,behnamm/cs244b_project,jblomer/ramcloud,mrdiegoa/ramcloud,anirajk/RAMCloud,jblomer/ramcloud,QingkaiLu/RAMCloud,y-higuchi/ramcloud,SMatsushi/RAMCloud,y-higuchi/ramcloud,matrix207/RAMCloud,jblomer/ramcloud,jcarreira/ramcloud,DavidLi2010/ramcloud,Frank-Wu/RamCloud,IMCG/RamCloud,jcarreira/ramcloud,behnamm/cs244b_project,matrix207/RAMCloud,SMatsushi/RAMCloud,taschik/ramcloud-load-manager,taschik/ramcloud-load-manager,jblomer/ramcloud,alexandermerritt/ramcloud,Frank-Wu/RamCloud,taschik/ramcloud-load-manager,rstutsman/RAMCloud,alexandermerritt/ramcloud,alexandermerritt/ramcloud,taschik/ramcloud,QingkaiLu/RAMCloud,utah-scs/RAMCloud,utah-scs/RAMCloud,jcarreira/ramcloud,y-higuchi/ramcloud,IMCG/RamCloud,matrix207/RAMCloud,y-higuchi/ramcloud,rstutsman/RAMCloud,taschik/ramcloud,QingkaiLu/RAMCloud,taschik/ramcloud-load-manager,jcarreira/ramcloud,anirajk/RAMCloud,Frank-Wu/RamCloud,QingkaiLu/RAMCloud,behnamm/cs244b_project,rstutsman/RAMCloud,rstutsman/RAMCloud,utah-scs/RAMCloud,rstutsman/RAMCloud,DavidLi2010/ramcloud,DavidLi2010/ramcloud,jcarreira/ramcloud,IMCG/RamCloud,utah-scs/RAMCloud,QingkaiLu/RAMCloud,jblomer/ramcloud