Add position of the disk when attaching it to a VM

[aegiap]

TL;DR: add a param position in gandi disk attach which could be used in the hosting.vm.disk_attach API method.

The public API documentation for the option of the hosting.vm.disk_attach optional dict:
http://doc.rpc.gandi.net/hosting/reference_vm.html#VMDiskAttachOptions

Use case:
As a IaaS user, I am using a virtual machine and need to use another system disk (aka virtual disk with an associated kernel). I need to detach the current system disk and then attach the new disk to the VM. The new disk need to be attached in position 0 or I will need to rewrite the kernel boot param.

On my computer, the current help is:

$ gandi disk attach --help
Usage: gandi disk [OPTIONS] DISK VM

  Attach disk to vm.

  disk can be a disk name, or ID vm can be a vm name, or ID

Options:
  --bg, --background  Run command in background mode (default=False).
  -f, --force         This is a dangerous option that will cause CLI to
                      continue without prompting. (default=False).
  --help              Show this message and exit.

We could add a -p --position value : On which position do you want to attach the disk to the VM.

Bonus point if we could have the access method as a parameter of gandi disk attach also. Something like : -a --access ro|rw : Access method to the disk, ro is for read-only, rw is for read and write.

Context:

$ gandi --version
Gandi CLI 0.12

$ cat /etc/debian_version 
8.0

$ dpkg -l gandicli
||/ Name                   Version          Architecture
ii  gandicli               0.12             all

[sayoun]

I'm closing this as it's available in release 0.13