Feature/designated node pools

Added 3 node pools to GKE and EKS with labels node-group: controllers, queues, apps.
Added nodeSelectors: node-group: controllers to operators installed with helm.
Added nodeAffinity to match label: node-group: queues to kafka and rabbit queues.
Fixed some providers by adding load_config_file = false.
Added default value standard to storage_class variable in rabbit and kafka module.

softwaremill / mqperf