EX-4811 lipe: Allows nfs/nfs4 targets for loris

EX-4811 lipe: Allows nfs/nfs4 targets for loris

Loris only supprots local filesystems (e.g. ext4, xfs and brtfs) as
backup target.

embedded MDS (ESx00X) doesn't have enough space in the local disk.
it needs to eliminate filesystem type and allow NFS/NFS4 for
loris's backup targets.

Test-Parameters: trivial
Signed-off-by: Shuichi Ihara <sihara@ddn.com>
Change-Id: I010793402065cd553c18a7f408240841e4a22565
Reviewed-on: https://review.whamcloud.com/46515
Reviewed-by: Li Xi <lixi@ddn.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: John L. Hammond <jhammond@whamcloud.com>