nlsh04 + nlsh05 instability

We experienced a few minor outages on servers nlsh04 and nlsh05.

The outages were the result of rapid restarts of the webserver (litespeed) when updating mod_security rulesets from Imunify360. Due to a bug in the restart logic of Imunify360, this triggered rapid forceful restarts. This in turn results in the webserver itself stopping and starting with 1 minute delay.

A fix has been implemented and deployed to all servers (nlsh04, nlsh05, nlsh06, nash02) to prevent this from happening, we will however have to monitor the situation for the next week or so to ensure all cases are handled.