[PATCH] url: use same credentials on redirect

[PATCH] url: use same credentials on redirect

Previously it could lose the username and only use the password.

Added test 998 and 999 to verify.

Reported-by: Tobias Bora
Fixes #15262
Closes #15282
Backported by: Matheus Polkorny <mpolkorny@gmail.com>.

Changes:

- Refresh patch context

- Small change in the Makefile to add a new test

Gbp-Pq: Name url-use-same-credentials-on-redirect.patch