If the graph directory is provided, make sure it's created first

[jontg]

No description provided.

[tduffield]

Thanks for the PR. There are a couple things I'd like to work with you on before we accept the PR.

1. I just want to confirm that the graph directory is relevant only to upstart and not any of the other service management types.
2. There are multiple difference commits going on here. Can you remove the commits related to the upstream merge and cacheing the key. That should be addressed in a separate commit.
3. Can you put the check for the node attribute as a chef resource guard instead of a conditional check?
4. Please add a chefspec test case to test your behavior.

If you do those three things we should be able to move forward with the merge.
Thanks!

[jontg]

Re-opening in #220 to address task 2, above.