Although the `newvm.sh` script had a variable to configure the value
specified for the `--network` argument to `virt-install`, it didn't
expose a way to set it. We need this ability so we can e.g. create VMs
on non-default networks like `camera` or `mgmt`.
For the longest time, whenever I needed to create a new virtual machine,
I just used `Ctrl+R` to find the last `virt-install` command I had run
and tweaked it for the new machine. At some point, my `~/.zsh_history`
overflowed, though, so the command I had been running got lost. To
avoid this silliness in the future, I've created a script that runs
`virt-manager` for me. As a bonus, it has some configuration flags for
the parameters that often vary between machines. For most machines,
though, the script can be run as simply as `newvm.sh name`.
Dustin