LU-9859 libcfs: move RESV_PORT definitions to lnet/lib-lnet.h

LU-9859 libcfs: move RESV_PORT definitions to lnet/lib-lnet.h

These are network related and only used in lnet, so move
to lib-lnet.h

Test-Parameters: trivial
Signed-off-by: Mr. NeilBrown <neilb@suse.de>
Change-Id: Idcac5eb8a9c9ee255b167f01bc873aa6bbfd09dd
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/50412
Reviewed-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Reviewed-by: Frank Sehr <fsehr@whamcloud.com>
Reviewed-by: Cyril Bordage <cbordage@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>