osprepare: Remove cephfs as a core dependency
osprepare: Remove cephfs as a core dependency

osprepare was installing or at least attempting to install cephfs as a
core dependency.  We no longer use cephfs and haven't for over a year.

Signed-off-by: Mark Ryan <f16215f7acd0bd7fdc465539215bd574c785b062@intel.com>

kaccardi/ciao,01org/ciao,ciao-project/ciao,kaccardi/ciao,ciao-project/ciao,01org/ciao