Add anonymous access prompt during setup

[mccahan]

I saw settings for allowing anonymous access in the Grafana env sample, but figured it might be helpful to surface it as a question during the setup process.

[jasonacox]

Thanks @mccahan - I like the idea. However, if we make this a separate workflow (anonymous-access.sh) it gives the impression that it is a standalone script. I think that is what we want, but currently the script pays no attention to the existing grafana.env file. Additionally, the way that the conditional works in setup.sh, it means that it will only run the first time you install. Ideally we want people to be able to run setup.sh to modify their configuration.

Can we add logic to edit the grafana.env instead of just append? I think it could be as simple as sed removing the relevant lines and then appending them back, as you have now.

[mccahan]

@jasonacox good thoughts

• Made it run every time they run setup.sh
• Removes config lines (and double-checks the built-ins are commented out as appropriate) before appending when they change modes