Add description in elasticstack_kibana_security_role resource

[aleks-ivk]

Creating a role using elasticstack_kibana_security_role resource in Terraform provider doesn't accept a description attribute even-though it is available in the Kibana API.

resource "elasticstack_kibana_security_role" "example" {
  name = "sample_role"
  elasticsearch {
    
  }
  kibana {
  
  } 
}

Passing description via metadata works, but it doesn't get visible in Kibana UI Roles under Roles Description.