tests: Make test suite work out of the box on Debian
tests: Make test suite work out of the box on Debian

* tests/torture.c (torture_setup_create_sshd_config): Rework how the
location of the sftp server is discovered, and add the Debian-specific
location.

Signed-off-by: Justus Winter <4d1bd7a5ca1cd26bee0df05b6801a6ce9a22196e@g10code.com>
Reviewed-by: Andreas Schneider <5be00ddc76278cf6077f5047ca3384a88460c671@cryptomilk.org>

kedazo/libssh,kedazo/libssh,kedazo/libssh,kedazo/libssh