feat(jsonnet): Make cluster optional in moniker (#4854)
feat(jsonnet): Make cluster optional in moniker (#4854)

I'm porting the JSON I get Deck so I can replicate the JSON document with Sponnet, and I noticed that Deck isn't giving me a cluster in the moniker field, so I'm making it optional.
spinnaker/spinnaker,spinnaker/spinnaker,duftler/spinnaker,duftler/spinnaker,spinnaker/spinnaker,duftler/spinnaker,spinnaker/spinnaker,duftler/spinnaker