update steps to run hello-world with ACL in selfhosted mode

[vinayada1]

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Description

Updated the steps to run hello world sample with Access control list in self hosted mode.

#851

_Please reference the issue this PR will close: #851

[yaron2]

Looks good overall, I'm wondering if we should remove the pythonapp / nodeapp specific bits, as this is not a quickstart...

[vinayada1]

Looks good overall, I'm wondering if we should remove the pythonapp / nodeapp specific bits, as this is not a quickstart...

However, this is in context of running the hello-world sample. I updated some links to point to this.

[msfussell]

Did quite a bit of re-writing and restructuring of the docs. Please read this through. It is important that our instructions work for both Linux/MacOs and Windows and so you need to provide env configuration settings for Windows also. Hopefully the cert file exported by Sentry can be reference with these env variables will work for Windows also. Can you test this out?

You will see in the doc, tab headings for Linux/MacOS/Windows as in the example here https://docs.dapr.io/getting-started/install-dapr-cli/

I also structured this so there were example config files at the start and these were then used both locally and K8s, rather than having these all bundles under the K8s examples.

Note for future doc guidelines.

1. References to other docs are now in the Hugo format like this [Init Dapr locally]({{< ref install-dapr.md >}})
2. Stay away from "we" usage, since this is unclear who/what this is referring to. Stick to you, wherever possible. https://docs.dapr.io/contributing/contributing-docs/#style-and-tone

[msfussell]

LGTM