save identity rsa keys before upgrade and restore it after upgrade zstack
save identity rsa keys before upgrade and restore it after upgrade zstack

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