Add realtime flag back to IOC configuration
After some discussion, we realised that we will have some hosts that
have a mix of IOCs that do and do not need CAP_SYS_NICE
and
CAP_IPC_LOCK
. As such, we do need a per-IOC mechanism to distinguish
these sorts of IOCs. For the moment, that is realtime
.
Note that we do not want to lock memory, so the commit is not fully being reverted.