Comment 1 for bug 1767979

started something at
 https://code.launchpad.net/~smoser/curtin/+git/curtin/+ref/bug/1767979-support-tmpfs-mounts

the intent there is to allow storage config to contain
 'spec' and 'fstype'

So MAAS could send something like:

storage:
 version: 1
 config:
   - id: mytmpfs
     type: mount
     spec: mytmpfs
     path: /tmpfs
     options: noexec,size=1024k