units: direct stdout/stderr of rescue shells to tty

With output of services going to syslog by default now, the rescue shell
units need to direct their output to tty explicitly.
Specify stderr too, just in case.

units/console-shell.service.m4

@@ -31,6 +31,8 @@ WorkingDirectory=/root
 ExecStart=-/sbin/sulogin
 ExecStopPost=-/bin/systemctl poweroff
 StandardInput=tty-force
+StandardOutput=inherit
+StandardError=inherit
 KillMode=process
 
 # Bash ignores SIGTERM, so we send SIGHUP instead, to ensure that bash

units/emergency.service

@@ -21,6 +21,8 @@ ExecStartPre=-/bin/echo 'Welcome to emergency mode. Use "systemctl default" or ^
 ExecStart=-/sbin/sulogin
 ExecStopPost=/bin/systemctl --fail --no-block default
 StandardInput=tty-force
+StandardOutput=inherit
+StandardError=inherit
 KillMode=process
 
 # Bash ignores SIGTERM, so we send SIGHUP instead, to ensure that bash

units/rescue.service.m4

@@ -31,6 +31,8 @@ m4_ifdef(`TARGET_MEEGO',
 ExecStart=-/bin/bash -c "exec ${SINGLE}"',)))
 ExecStopPost=-/bin/systemctl --fail --no-block default
 StandardInput=tty-force
+StandardOutput=inherit
+StandardError=inherit
 KillMode=process
 
 # Bash ignores SIGTERM, so we send SIGHUP instead, to ensure that bash