Add spec coverage for the graphite_storage_schema resource.
user
```ruby
require "spec_helper"
load_resource("graphite", "storage_schema")

describe Chef::Resource::GraphiteStorageSchema do

  let(:resource_name) { "theone" }

  it "sets the name attribute to name" do
    expect(resource.name).to eq("theone")
  end

  it "attribute config defaults to nil" do
    expect(resource.config).to be_nil
  end

  it "attribute config takes a Hash value" do
    resource.config("a" => "b")

    expect(resource.config).to eq("a" => "b")
  end

  it "action defaults to :create" do
    expect(resource.action).to eq(:create)
  end

  it "actions include :delete" do
    expect(resource.allowed_actions).to include(:delete)
  end
end
```
assistant