Add check_cron check

Signed-off-by: Christophe Vanlancker <christophe.vanlancker@inuits.eu>
Correct checkcron so that it checks for at least 1 cron process and alerts if more than 20 are running

Signed-off-by: Christophe Vanlancker <christophe.vanlancker@inuits.eu>
checkcron, only check if cron has at least 1 instance

Signed-off-by: Christophe Vanlancker <christophe.vanlancker@inuits.eu>
Woeps, remove unusef variable

Signed-off-by: Christophe Vanlancker <christophe.vanlancker@inuits.eu>