LU-16217 iokit: Add lst.sh wrapper and lst-survey

LU-16217 iokit: Add lst.sh wrapper and lst-survey

lst.sh is a wrapper around the LNet selftest (lst) utility. It
provides a streamlined interface for executing read, write, combined
read/write and ping lst tests.

lst-survey leverages lst.sh to test the performance of groups of LNet
peers against each other.

HPE-bug-id: LUS-10279
Test-Parameters: trivial
Signed-off-by: Chris Horn <chris.horn@hpe.com>
Change-Id: I4c2593df1289b0b97760cb402de1e101ca22c319
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/48799
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Alexey Lyashkov <alexey.lyashkov@hpe.com>
Reviewed-by: Alexander Zarochentsev <alexander.zarochentsev@hpe.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>