tests/e2e: add forward auth e2e test (#11374)

* add nginx forward_auth e2e tests

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* add envoy

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* cleanup

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* remove even more duplicate code

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* cleanup more

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* add traefik static config

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* more cleanup, don't generate dex config cause they support env variables

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* use default dex entrypoint to use templating

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* remove options that are always set as default

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* fix

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* fix compose flag

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* add caddy

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* merge python files

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* use whoami api to check better

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* fix envoy config

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* set invalidation flow

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* fix logout checks

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

---------

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

website/docs/add-secure-apps/providers/proxy/_traefik_standalone.md

@@ -32,7 +32,7 @@ http:
         app:
             loadBalancer:
                 servers:
-                    - url: http://ipp.internal
+                    - url: http://ip.internal
         authentik:
             loadBalancer:
                 servers: