Broaden check for duplicate VM IDs to prevent race condition #316
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The test case doesn't appear to work for all cases as shown in #315, I've broadened it to include
config file already existsas well.Ideally the VMs should allocate IDs within the plugin by seeing what's available and pre-choosing them, rather than allowing proxmox to do so, I think the current retry system is a little bit messy. But I'm not really at liberty to rewrite that for you at the moment.
Closes #315