Update CookieAuthenticationHandler.ApplyHeaders to honor AuthenticationProperties.RedirectUri

[kevinchalet]

Currently, this code doesn't work as CookieAuthenticationHandler.ApplyHeaders doesn't honor AuthenticationProperties.RedirectUri (instead, you get an empty result). It would be great to fix that in the next milestone.

public IActionResult SignOut() {
    return SignOut(new AuthenticationProperties { RedirectUri = "/" },
        CookieAuthenticationDefaults.AuthenticationScheme);
}

[Tratcher]

Note that the use of RedirectUri varies. In cases like Challenge it is used as the final destination after authentication is complete. Using it directly for SignOut may be fine though.

[kevinchalet]

Well, AFAICT, we've removed all the problematic uses of RedirectUri (e.g #275), which is now basically just a ReturnUrl and nothing more.

[muratg]

Let's investigate in 1.0.0.

[troydai]

Fixed in 6a9f1f9