GetProcessGroupsToRemove returns a list of process groups to be removed based on the removal mode.

GetRemainingMap returns a map that indicates if a process group is fully excluded in the cluster.

GetZonedRemovals returns a map with the zone as key and a list of process groups IDs to be removed.

RemovalAllowed returns if we are allowed to remove the process group or if we have to wait to ensure a safe deletion.

TerminatingZone maps all process groups that have the condition ResourcesTerminating.

UnknownZone maps all process groups that are not known to the FoundationDB status.