Ensure ssh config dir exists before writing file
Ensure ssh config dir exists before writing file

This assumed `~/.ssh/` would exist and just the file didn't.

Now it will create the directory as well if it doesn't exist.

roots/trellis,buluma/trellis,partounian/trellis,partounian/trellis,newtonne/trellis,roots/bedrock-ansible,partounian/trellis,partounian/trellis,pressbooks/trellis,roots/bedrock-ansible,newtonne/trellis,pressbooks/trellis,newtonne/trellis,roots/trellis,buluma/trellis,buluma/trellis,buluma/trellis