helm: add demo repositories info for launcher page in UI

[giuseppe-steduto]

Closes reanahub/reana-ui#323.

[codecov]

Codecov Report

Merging #746 (97c0566) into master (9dd672d) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

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[giuseppe-steduto]

Should we give admins the possibility to also specify the REANA specification file for the example to be launched? Personally I think it might feel a bit like "overloading".

[mdonadoni]

(minor) You can probably use toYaml to avoid all of this?

[giuseppe-steduto]

I didn't know about it, nice! The "problem" with toYaml however is that as far as I have understood and tried, everything has to be already properly indented and quoted in the values file, so I guess it gives less flexibility to the admins. Since this whole range thing is not too big and gives the details about the properties in the list, I think we can keep it this way. Do you agree?

[mdonadoni]

Should we give admins the possibility to also specify the REANA specification file for the example to be launched?
Personally I think it might feel a bit like "overloading".

To be honest, I think that would be a nice addition! I think the ideal would be to make this field optional, defaulting to reana.yaml. We could even go as far as letting admins also customise the name of the launched workflows, but this is really minor compared to customising the REANA specification file.