Merge pull request #1096 from maksimsamt/master

Update vm_qemu.md | dashes in tags allowed everywhere but at the start of tag

docs/resources/vm_qemu.md

@@ -121,7 +121,7 @@ The following arguments are supported in the top level resource block.
 | `hotplug`                     | `str`    | `"network,disk,usb"` | Comma delimited list of hotplug features to enable. Options: `network`, `disk`, `cpu`, `memory`, `usb`. Set to `0` to disable hotplug. |
 | `scsihw`                      | `str`    | `"lsi"`              | The SCSI controller to emulate. Options: `lsi`, `lsi53c810`, `megasas`, `pvscsi`, `virtio-scsi-pci`, `virtio-scsi-single`. |
 | `pool`                        | `str`    |                      | The resource pool to which the VM will be added. |
-| `tags`                        | `str`    |                      | Tags of the VM. Comma-separated values (e.g. `tag1,tag2,tag3`). Tag may only include the following characters: `[a-z]`, `[0-9]` and `_`. This is only meta information. |
+| `tags`                        | `str`    |                      | Tags of the VM. Comma-separated values (e.g. `tag1,tag2,tag3`). Tag may not start with `-` and may only include the following characters: `[a-z]`, `[0-9]`, `_` and `-`. This is only meta information. |
 | `force_create`                | `bool`   | `false`              | If `false`, and a vm of the same name, on the same node exists, terraform will attempt to reconfigure that VM with these settings. Set to true to always create a new VM (note, the name of the VM must still be unique, otherwise an error will be produced.) |
 | `os_type`                     | `str`    |                      | Which provisioning method to use, based on the OS type. Options: `ubuntu`, `centos`, `cloud-init`. |
 | `force_recreate_on_change_of` | `str`    |                      | If the value of this string changes, the VM will be recreated. Useful for allowing this resource to be recreated when arbitrary attributes change. An example where this is useful is a cloudinit configuration (as the `cicustom` attribute points to a file not the content). |