* bin/shellcheck-all was missing some files
`bin/shellcheck-all` identifies what files to check by filtering by the
`text/x-shellscript` mime-type, which only applies to files with a
shebang pointing to bash. We had a number of files with a
`#!/usr/bin/env sh` shebang that (at least in Ubuntu given `sh` points
to `dash`) only exposes a `text/plain` mime-type, thus they were not
being checked.
This fixes that issue by replacing the filter in `bin/shellcheck-all`, using a simple grep over the file shebang instead of using the `file` command.
* Add automatic readme generation for charts
The current readmes for each chart is generated
manually and doesn't contain all the information available.
Utilize helm-docs to automatically fill out readme.mds
for the helm charts by pulling metadata from values.yml.
Fixes#4156
Co-authored-by: GMarkfjard <gabma047@student.liu.se>
Alejandro Pedraza