Dashed applications are not correctly mapped as workflows images

Case: I want to use an application image named `my-app` inside a workflow. The image is not retrieved correctly because of the conversion to `my_app` key in values file.
One solution for this and other issues would be to just keep the dashes and remove all - to _ replacements.

Start by tracing how workflow application images are looked up and how their keys are generated in the values file. Reproduce the `my-app` case and verify that the dashed application name resolves to the intended image without an underscore conversion.

Written by the indexing model from the issue text.