LU-16277 lnet: fix bad parameter in LUTF

LU-16277 lnet: fix bad parameter in LUTF

In SimpleLustreNode, exception parameter is not passed to BaseTest
that leads to this parameter not used when using remote agent.

Test-Parameters: @lnet
Signed-off-by: Cyril Bordage <cbordage@whamcloud.com>
Change-Id: Ie458ef4a41dc059da8f069d8d62d365c21c9f25d
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/48985
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Frank Sehr <fsehr@whamcloud.com>
Reviewed-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>