tests: Enable all CASignatureAlgorithms as SHA1 certificates are now disabled in OpenSSH 8.2p1
This option is unknown to older OpenSSH versions (for example CentOS 7
with OpenSSH 7.4) so we can not add it everywhere.
Signed-off-by: Jakub Jelen <firstname.lastname@example.org>
Reviewed-by: Andreas Schneider <email@example.com>
(cherry picked from commit 44de453b227115c0d60926302901ae0869ef5d1e)