LU-6142 kgnilnd: SPDX for GNI LND

LU-6142 kgnilnd: SPDX for GNI LND

Convert from verbose license text to SPDX.

Test-Parameters: trivial
Signed-off-by: Timothy Day <timday@amazon.com>
Change-Id: I429de7ecee8bd42d83401b4ede3a00947ba65210
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/55931
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: jsimmons <jsimmons@infradead.org>
Reviewed-by: Oleg Drokin <green@whamcloud.com>