CE-2447: Various fixes from actually testing deployment

This MR contains various fixes to issues found while testing actual deployment, mostly related to the fact that we will be deploying to hosts that have a mix of IOCs deployed using the old playbook as well as IOCs deployed using this playbook; since there are changes to how we expect IOCs to look on the hosts, we cannot rely on simply redeploying everything, as this would cause an undesired restart of essentially every single IOC all at once.