Fix exception in 'yum repolist'
Fix exception in 'yum repolist'

lattwood/yum-s3-iam,mbrossard/yum-s3-iam,seporaitis/yum-s3-iam,strebitz/yum-s3-iam,henrysher/yum-s3-tools,kemra102/yum-s3-iam,revmischa/yum-s3-iam,AFriemann/yum-s3-iam