LU-6142 kfilnd: SPDX for Kfabric LND

LU-6142 kfilnd: SPDX for Kfabric LND

Convert from verbose license text to SDPX.

Test-Parameters: trivial
Signed-off-by: Timothy Day <timday@amazon.com>
Change-Id: Id75f33b7a1d3eaa699f6f7056ae7e54fd88d7240
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/55929
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Shaun Tancheff <shaun.tancheff@hpe.com>
Reviewed-by: Chris Horn <chris.horn@hpe.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>