[installer]: create config command and deprecate init command

[mrsimonemms]

Description

Create a config init command and deprecate the init command.

The two commands are functionally identical, with the exception of the new command saving the file for you (the previous command just printed the output).

This is part of a major refactoring of the configuration so that it's simpler and just config generation. See #12319 for my notepad of how it'll look eventually.

Related Issue(s)

Fixes #12678
Fixes #12847

How to test

Run go run . config init and check gitpod.config.yaml

Release Notes

[installer]: create config command and deprecate init command

Documentation

Werft options:

• /werft with-preview

[mrsimonemms]

/cc @gitpod-io/platform Although we have no plans to remove the init command, we should migrate any scripts from installer init to installer config init

[werft-gitpod-dev-com]

started the job as gitpod-build-sje-installer-config-init.1 because the annotations in the pull request description changed
(with .werft/ from main)

[werft-gitpod-dev-com]

started the job as gitpod-build-sje-installer-config-init.3 because the annotations in the pull request description changed
(with .werft/ from main)

[werft-gitpod-dev-com]

started the job as gitpod-build-sje-installer-config-init.4 because the annotations in the pull request description changed
(with .werft/ from main)

[ArthurSens]

Hey Simon, did you notice that this change is breaking deployments to preview environments? 😬

[mrsimonemms]

@ArthurSens is that this instance? This looks to be installing ok now

[ArthurSens]

Ah yes, sorry for misreading the results :)

@mads-hartmann, as simon points out, I don't think we need to change the installer plugin in ArgoCD/workspace clusters/preview right now, but should we add issues to the schedule?

[mrsimonemms]

@ArthurSens phew.

I've created #12847 to capture the SaaS deployment work

[mads-hartmann]

@ArthurSens @mrsimonemms For SaaS deployment we only use the render command. I left a comment here ☺️

[mads-hartmann]

workspace clusters

They also don't use the init command as far as I can tell (ref)

previews

@mrsimonemms could I persuade you to update this line to use config init as part of this PR? Then we should be all good and not use the deprecated command anywhere that I can remember right now at least ☺️

[mrsimonemms]

@mads-hartmann ooooh, you drive a hard bargain. But, seeing as you asked so nicely 😃

[mads-hartmann]

Awesome, thanks Simon!

[nandajavarma]

Tested and code looks good to me!