[pve-devel] add qmimport command

[Alexandre Derumier]

Hi,

This is second attempt to have a command to import external disk with a single command line.

This time, I have a separate qmimport, cli only and only for root.

If it's really not possible to include such feature in proxmox,
could you review patch 1 & 2 to include them upstream ?
They are small changes to allow clone disk method with path as src.

Like this, I could maintain the patch3 as an external extra tool for my customers.