Add test for using private repos in AppSet tests

[crenshaw-dev]

Summary

We need tests to show that the ApplicationSet controller can handle private repositories.

Motivation

When ApplicationSet was merged with Argo CD, I think we upgraded to the new credentials passing mechanism without ensuring that it was working. I think we need the AppSet controller to run the git-ask-pass server.

Proposal

Copy patterns from the already-existing Argo CD tests for private repos.

[iam-veeramalla]

@rishabh625 do you want to work on this or through some input for the tests ?

[rishabh625]

Oh yeah that I missed. thanks!!! @iam-veeramalla for bringing it to my notice as i m not following argocd,

Yeah I'll add the tests tysm

[rishabh625]

Currently private repo in git generator is not working, as askpass method for credentials was used without starting server. If we start the askpass server , private repo in git generator works good. Problem is with e2e tests since e2e test share same os and filesystem starting a new server in appset overwrites the sock file and askpass mechanism doesn't work in repo server. m unsure of how to proceed on. Related PR

[rishabh625]

plz close as fixed