QuickStart Unix: use dafs type and name for demand attach file services

QuickStart Unix: use dafs type and name for demand attach file services

bos create <machine name> dafs dafs [...] (not fs).

Reviewed-on: http://gerrit.openafs.org/3197
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit 4f5cdd73f665434f531144151f9b6e1f4702cf02)
Change-Id: I301f61e507ad5947a786709af907a99b91725021
Reviewed-on: http://gerrit.openafs.org/3232
Tested-by: BuildBot <buildbot@rampaginggeek.com>