EnsureHosts: Fix typo in argument parsing
EnsureHosts: Fix typo in argument parsing

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