ApplicationController sync operations should respect HTTP transport settings about argo-cd

[jMarkP]

@agaudreault thanks! I've been investigating an intermittent authentication error on sync in our setup, and one thing that occurred to me was to look into retries to at least make the errors have less of an impact, and that's when I found the difference is usage.

In the end I think I've found the underlying source of the issue to fix it for good, so I don't think I'll need to change any of these settings. I just raised it in case it's a surprising thing that these config defaults (things like timeouts and backoffs) aren't applied universally in ArgoCD. In other words, I'm not blocked in any way on this. It's just an FYI more than anything

[agaudreault]

@jMarkP Can you share the reason you would want to apply these settings? are you currently having performance issues?

@jannfis might be interested to this one since he made the initial implemention iirc