Sidecar -reports generator configuration

[andrewazores]

Closes #277 (obsolete)

The Operator should have a way to configure deployment of -reports as sidecar containers alongside the main Cryostat instance. If the configuration is set up for 0 sidecars then the overall configuration should be essentially identical to how it is now, with the main Cryostat instance performing subprocess report generation. If >0 sidecars are configured then a deployment should be created with the corresponding number of replicas, with configured resource (CPU/mem) requests+limits, and an internal-traffic-only Service in front of the sidecars, with the main Cryostat instance configured to use remote report generation pointed at the Service.