Checklist:

• [ X] I've searched in the docs and FAQ for my answer: https://bit.ly/argocd-faq.
• [ X] I've included steps to reproduce the bug.
• [X ] I've pasted the output of argocd version.

Describe the bug

I am trying to connect to a Harbor helm repository which is self-hosted and has a self-signed certificate.

for the self-signed certificate, I add the pem to the argocd-tls-certs-cm config map

For public repo's this is fine everything works ok, but for private projects, I believe I need to create a repository definition in argo and this is where I hit problems (otherwise i get unauthorised errors as expected)

To Reproduce

For simplicity did this all within a running argo server pod

First, add the harbor self-signed cert to the argocd-tls-certs-cm config map

argocd@argocd-server-5d7f4656b-mtwbh:~$ argocd repo add registry.magic.com --name private-repo --enable-oci --type helm --username user --password magic
FATA[0000] rpc error: code = Unknown desc = error testing repository connectivity: `helm registry login registry.magic.com --username ****** --password ****** --ca-file /app/config/tls/registry.magic.com` failed exit status 1: Error: unknown flag: --ca-file

If i run the same helm command in the pod, minus the --ca-file flag it works fine

I have also tried running the repo add command with --insecure-skip-server-verification but it has the same result. ... If I remove my certificate from argocd-tls-certs-cm config map I get a bunch of certificate issues when trying to pull in the charts when they are set up as dependent charts

Expected behavior

Argo is able to add a private oci repo from Harbor

Version

argocd: v2.4.8+844f79e
  BuildDate: 2022-07-29T17:01:39Z
  GitCommit: 844f79eb9d8f3ab96d4ce6f8df211c6093a660ba
  GitTreeState: clean
  GoVersion: go1.18.4
  Compiler: gc
  Platform: linux/amd64
argocd-server: v2.4.8+844f79e
  BuildDate: 2022-07-29T17:01:39Z
  GitCommit: 844f79eb9d8f3ab96d4ce6f8df211c6093a660ba
  GitTreeState: clean
  GoVersion: go1.18.4
  Compiler: gc
  Platform: linux/amd64
  Kustomize Version: v4.4.1 2021-11-11T23:36:27Z
  Helm Version: v3.8.1+g5cb9af4
  Kubectl Version: v0.23.1
  Jsonnet Version: v0.18.0

I am not sure if I will hit any issues raised in #8563 but this is my main stumbling block