Code review comment for ~caleb-ellis/maas:deploy-in-table

The in-table deploy action only displays whatever is set as default in settings. If you wanted to deploy a machine using non-default os/release you would have to do that via the top-right action menu that shows the different dropdowns for os/release/kernel. The only visible difference in this MP is that "Deploy..." becomes "Deploy {{ default_os/default_release }}..."