Feature request: Support for file-path in kustomization-crds

[suryapandian]

Describe the bug

Existing application and kubernetes manifest setup:

1. Every team has one namespace where they deploy all of their applications.
2. Every team has one GitOps repository where all the application manifest live after being processed by CI's of the application.
3. Every team has sub-teams each sub-team manages few of the applications.

For example: This is a sample gitops repo for reference https://github.com/suryapandian/dummy-gitops-for-namespace1

Folder structure of gitops repository

<namespace-name-folder>
    -application1-manifest.yaml
    -application2-manifest.yaml
    -application3-manifest.yaml

Given this approach we would like to create one flux-kustomization CRD for each of our application-manifest.yaml. However, flux kustomization only supports folder path for kustomization and does not support file paths.

It would be very much useful if we could add support for filepaths for kustomization CRD. It would make kustomization

Steps to reproduce

1. Create kustomization crd for the file-path development/application1-manifest.yaml
2. we get the error False open /tmp/kustomization-740342244/development/application1-manifest.yaml/kustomization.yaml: not a directory

Expected behavior

We would like flux-kustomimzation crd to be able to create kustomization crd instance to accept file-path instead of always assuming a folder path.

Screenshots and recordings

No response

OS / Distro

macos 12.4

Flux version

0.30.2

Flux check

N/A

Git provider

GitHub

Container Registry provider

NA

Additional context

No response

Code of Conduct

• I agree to follow this project's Code of Conduct