[3.17] main/openssh: fix CVE-2023-48795, CVE-2023-51384, CVE-2023-51385
Patches copied from Debian’s openssh 9.2p1 (https://sources.debian.org/src/openssh/1%3A9.2p1-2%2Bdeb12u2/debian/patches/). Only CVE-2023-51385 needs a tiny modification to apply.
Also enable test suite.
Resolves #15593 (closed)
Edited by Jakub Jirutka