Fixes#5857
### Motivation
With current aproach for specifying storage class in persistent volume claim it's not possible to customize the provisioner parameters. If the property 'storageClass' is declared the chart always create a new storage class with hardcoded parameters.
### Modifications
A property 'storageClassName' was added to support an existent storage class.
### Verifying this change
This change is a trivial rework / code cleanup without any test coverage.
* [documentation][deploy] Update deployment instructions for deploying to Minikube
* Enable functions workers
* [documentation][deploy] Improve helm deployment script to deploy Pulsar to minikube
### Changes
- update the helm scripts: bookie/autorecovery/broker pods should wait until metadata is initialized
- disable `autoRecovery` on bookies since we start `AutoRecovery` in separate pods
- enable function worker on brokers
- provide a values file for minikube
- update documentation for using helm chart to deploy a cluster to minikube
* move the service type definition to values file
* Helm charts for deployment on GKE
* Repackaginh helm charts under deployment/kubernetes/helm
* Formatting licences
* Removing cloud specific values to enable more generic deployments
