tests: Wait for sshd to start before connecting

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>

(cherry-picked from commit a3557b81)

tests/torture.c

@@ -869,6 +869,9 @@ void torture_setup_sshd_server(void **state)
     rc = system(sshd_start_cmd);
     assert_return_code(rc, errno);
 
+    /* Give the process some time to start */
+    usleep(300);
+
     setenv("SOCKET_WRAPPER_DEFAULT_IFACE", "21", 1);
     unsetenv("UID_WRAPPER_ROOT");
     unsetenv("PAM_WRAPPER");