Clone wait should be configurable

[AleRousse]

Hi,

So I am getting this following error message when I try to create a VM that required a large resize on the template's disk.

Error: 500 command '/usr/bin/qemu-img resize -f qcow2 /mnt/pve/storage-vmpool/images/101/vm-101-disk-0.qcow2 75161927680' failed: got timeout

This is mostly thrown because the create sequence is too fast and terraform is not waiting for the full resize to be done before trying to start the VM.

A PR will follow

Thanks

[M0NsTeRRR]

Facing the same problem, I hope it will be merged soon :)