Fixed formatting issue in scripts/cluster.py exception
Fixed formatting issue in scripts/cluster.py exception

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