This just calls create_vm (restore is a special case of create).

Needed by pve2-api-doc

argument parser should be more or less compatible with what
we had in 1.X

We want to share code and use new PVE 2 framework features. So it is no longer possible to distribute this a separate packages.

We currently need 'vzctl exec' for net stats which is clumsy.
And the blkio stats for container does not seem to deliver
correct values.