LU-8402 llite: assume OBD_CONNECT_ATTRFID

LU-8402 llite: assume OBD_CONNECT_ATTRFID

OBD_CONNECT_ATTRFID has been supported by MDSs since before 1.6 so add
it to the client side required flags and remove some code to handle
servers that do not support it.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: I841ae21811c0903c10a84e659d2d1f8255c8109f
Reviewed-on: https://review.whamcloud.com/30010
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>