OKD update the samples more or less independently from OCP. It would be good to add support for this in library-sync.sh so that OCP and OKD don't "step on each others' toes" when doing the updates.

library-sync.sh should accept a parameter, say --okd, that when set will update only the OKD samples (all of them, because we don't have unsupported samples in OKD) and when not set, it will update the supported OCP samples.