Ust 5060/dev/5062 send content url

I don't think that this is a very realistic test. We're not about to automatically install Jenkins to run tests on ncf... That would be one hell of a test dependency!

Why don't we just use some dummy URLs (a random website, preferable ncf.io/testurl). We can always POST to them, they just won't return anything in particular, but since we're not testing the returned content here, just return codes, that doesn't seem to matter.