enable zstack upgrade to update yum_repo by adding new -R aliyun or -R 163
enable zstack upgrade to update yum_repo by adding new -R aliyun or -R 163

zstackio/zstack-utility,mrwangxc/zstack-utility,live4thee/zstack-utility,mingjian2049/zstack-utility,mingjian2049/zstack-utility,mrwangxc/zstack-utility,ghxandsky/zstack-utility,ghxandsky/zstack-utility,live4thee/zstack-utility,mingjian2049/zstack-utility,ghxandsky/zstack-utility,live4thee/zstack-utility,zstackorg/zstack-utility,zstackio/zstack-utility,mrwangxc/zstack-utility,zstackorg/zstack-utility,zstackorg/zstack-utility,zstackio/zstack-utility