Provide support for pod anti affinity for Quay operator

Quay 3.4

Currently Quay only supports nodeselector , However customer would like support for pod affinity/anti affinity via Quay operator.

Use case:

Customer  has 3 infra nodes, and want to run 3 replicas of quay - but now, we might end up with 3 quay pods on the same node.

ACCEPTANCE CRITERIA

• By default we have sane pod affinity rules (avoid running multiple pods of the same deployment in the same node)
• We allow users to set their own affinity rules if necessary (overwrite)
• E2E tests (kuttl)