testnode: give time to supervisord to kill sub processes
supervirord when stopping might need several seconds to kill properly sub processes. So give him some time before killing more brutaly with killall. This should solve issue with functional tests are not working due to apache not starting. Apache when killed to brutally let unclosed semaphore, and after some time, we have too many semaphore to start new apache, making functional tests failing.
Showing with 15 additions and 0 deletions