<fix>[kvm_v2v]: add raise exception for do_ssh_mount
<fix>[kvm_v2v]: add raise exception for do_ssh_mount

the ssh mount cmd cannot print exception, so add raise exception for do_ssh_mount

Resolves: ZSTAC-39881

Change-Id: I7764716f70647071696d69647a616779686f7469

zstackio/zstack-utility,zstackio/zstack-utility,zstackio/zstack-utility