SNOW-2194055: Separate server and redirect URIs in AuthHttpServer

[sfc-gh-turbaszek]

Fixes support for redirect_uri. Copy of #2400

[sfc-gh-fpawlowski]

Left minor comment regarding the flow of configuration

[npeshkov]

I tested the changes locally and in a Cloud Dev Env (custom redirect URI), and both work 👍

[sfc-gh-fpawlowski]

lgtm

[npeshkov]

Previously, without any configuration on user side, effective redirect uri would have a port added to it. This no longer happens, which will break setups in which the identity provider expects the uri to end with a port

[npeshkov]

In a previous iteration of this PR, it was possible to specify the port and the host of the local auth server using environment variables. I do not see an easy way to do this anymore, and it is relevant when the local server port needs to match a part of the redirect uri (in cloud environments).

Edit: I did not see the oauth_socket_uri connection param