LU-14790 lnet: Reflect ni_fatal in NI status

LU-14790 lnet: Reflect ni_fatal in NI status

If the ni_fatal_error_on flag is set on an NI then that NI should be
considered down.

Lustre-change: https://review.whamcloud.com/44072
Lustre-commit: d77e95cc6d4e947be60757a861c656d8b30d2972

HPE-bug-id: LUS-10167
Test-Parameters: trivial testlist=sanity-lnet
Signed-off-by: Chris Horn <chris.horn@hpe.com>
Change-Id: I201bda7e06da1fb1cc23db70ce0cfa3118635d0f
Reviewed-on: https://review.whamcloud.com/46845
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>