LU-13728 utils: add missing global parameters

LU-13728 utils: add missing global parameters

lnetctl export shows the complete set of global parameters as
with lnetctl global.

Signed-off-by: Cyril Bordage <cbordage@whamcloud.com>
Change-Id: I4d864fb4734679106ac6c49ec7f57f5e00ba3434
Reviewed-on: https://review.whamcloud.com/40298
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Chris Horn <chris.horn@hpe.com>
Reviewed-by: Amir Shehata <ashehata@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>