Provide more details about error if connection to argocd fails.

[debugger24]

Is your feature request related to a problem? Please describe.

I am currently facing issues connecting image-updater to argocd.

level=error msg="error while communicating with ArgoCD" argocd_server=argocd.homelab.rahulkumar.dev grpc_web=true grpc_webroot= insecure=false plaintext=false

I tried different options, using ingress host address, using argocd k8s cluster internal address etc, different configuration. But still its not working. Also the log message is not detailed enough what is going wrong.

With same config when I try to run argocd cli in a pod in the same namespace, I am able to connect to argocd, but it doens't work with image-updater.

Describe the solution you'd like
More detailed message maybe in debug level logging at what is failing, what is the issue.