LU-18208 lnet: Server VM crashed: unable to handle

LU-18208 lnet: Server VM crashed: unable to handle

Revert "LU-18160 lnet: ensure lnetctl ping completes in a finite time"
t seems like the patch for LU-18160 introduced crashes. Maybe the
change from wait_for_complete from timeout to interupt. Reverting that
patch solved the problem.

This reverts commit 1666840bb06bbeeb35b2f9a51f9235c36886a3c6.

Test-Parameters: trivial testlist=sanity
Signed-off-by: Frank Sehr <fsehr@whamcloud.com>
Change-Id: Ie48185eb973eee65df2810d7acf940cf6981b83e
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/56322
Reviewed-by: Timothy Day <timday@amazon.com>
Reviewed-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>