Update local-storage.md

[shtouff]

Add an explicit example of kubelet config for the local-path-provisioner paragraph.

Pull Request

What? (description)

I think the local storage page lacks a clear example of how to integrate local-path-provisioner

Why? (reasoning)

While playing with local-path-provisioner on my lab cluster, I had sometimes some dataloss I couldn't explain. After long troubleshooting, I identified some strange behaviour when using volumeMount with the subPath statement.

I initially thought it could a bug in the provisioner itself, and I proposed an extra test there (rancher/local-path-provisioner#467).

After a while, and lots of tests, I ended up trying to replicate the kubelet config which is shown in the hostPath paragraph, and everything went back to the expected behaviour.

Afterwards, it may be seen as obvious, but I really thought that hostPath and local-path-provisioner were 2 distinct paragraphs, hence my mistake.

Feel free to reject if you think it's a duplicate and/or unnecessary.

Acceptance

Please use the following checklist:

• [ x] you linked an issue (if applicable)
• you included tests (if applicable)
• you ran conformance (make conformance)
• you formatted your code (make fmt)
• you linted your code (make lint)
• [ x] you generated documentation (make docs)
• you ran unit-tests (make unit-tests)

See make help for a description of the available targets.

[smira]

thank you, that's a nice catch!

[smira]

/m