Naive implementation of a guard, this checks if any of the scheduled nodes are used by two daemon sets, does not pre-emptively catch overlaps by selector because of how kubernetes selectors work Also naively checks the selectors to see if there are any selector overlap if two label selectors are labels.Everything() Returns [ daemon set contended, contention exists, error ].

This label is applied to pods owned by a DS.

TODO: move other config options in here to reduce the number of arguments to NewFarm().

Farm instatiates and deletes daemon sets as needed.

DaemonSetLocker is necessary to allow coordination between multiple daemon set farm instances.