gorse worker and server hpa fix kind error

[adonaicosta]

HPA to worker and server are set to kind StatefulSet, but both are ReplicaSets, I'll recreate hpa using replicasets to works.

Suggestion, add kind to worker and server possibility to choose Deployment or StatefulSet and use this in HPA creation. You'll need change deployment.yaml to accept this choose in both, worker and server.