Remove all shadow run related files from reconcile module and save desired config on workspace create

Issue: Persist desired kubernetes configuration on wor... (#541907 - closed)

What does this MR do and why?

Removes all shadow run related files from reconcile module.

These files were introduced for shadow run to freeze desired_config in Introduce create desired_config chain in the "c... (!194589 - merged) • Ashvin Sharma • 18.2 and are no longer needed.

In addition to this, this MR also saves the desired_config on whenever a workspace is created, as opposed to generating desired_config on each reconciliation.

References

Related epic— Simplify freezing of Kubernetes resources for w... (&17483)

How to set up and validate locally

1. Open gdk.test:3000

2. Create a workspace.

3. Note that the workspace is created and confirm that this workspace has a corresponding row in workspace_agentk_states table by running.

   RemoteDevelopment::WorkspaceAgentkState.last

4. Open rails console using bin/rails c

5. Delete the frozen config like so

   RemoteDevelopment::WorkspaceAgentkState.all.delete_all

6. Delete workspace deployments

   kubectl delete deployment -n <namespace> <deployment name>

7. Restart agentk (because I do not know how else to trigger a reconcile for existing workspace, happy to know other way) and note that deployment comes back again despite the absent frozen desired_config.

MR acceptance checklist

Evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.