reduce system requirements for ZStack production installation to 2 CPUs and 4G memory
reduce system requirements for ZStack production installation to 2 CPUs and 4G memory

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