[Bug] error in sample karbon/create_k8s_cluster.yml

[Golgautier]

Describe the bug
create_k8s_cluster.yml seems to have an issue.
In the set-fact task, we do setup

storage_class:
    name: <container_name>

First, It seems strange to set container name in the storage-class variable.

In the cluster deployment code :

• Dev clusters use : storage_container: "{{storage_class.name}}" : it is ok (but not clear/clean)
• Prod cluster uses : storage_container: "{{storage_container.name}}" : it fails because of variable storage_container is not defined

To Reproduce
Just try to deploy prod cluster from sample.

Stack trace

Expected behavior
I htink it would be great to replace

  storage_class:
    name: <container_name>

by

  storage_class:
    name: <storage_class_name>
  storage_container:
    name: <storage_container_name>

And update deployment tasks with

  storage_class:
    name:"{{storage_class.name}}"
    storage_container: "{{storage_container.name}}"