Refs #2301: Bad statistics on Audit page

Caused by light-pull triggering; When more than one deployment
on the same machine launched, the invertory order triggers
a light-pull of each them. Default delay (60 seconds) between routine
searching the commands and start of commands may cause a start
of already finished command, which will be re-switched as 'scheduled'
without any check.

This fix adds a check of re-triggered command by light-pull.
If checked command is already finished, restart of invalid command
will not be performed.