enter_chroot: copy over ssh configuration

enter_chroot.sh

 #!/bin/bash
 
 # Copyright (c) 2009 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Script to enter the chroot environment
 
 # Load common constants.  This should be the first executable line.
 # The path to common.sh should be relative to your script's location.
@@ skipping 124 matching lines @@
           die "Could not mount $MOUNTED_PATH"
     fi
 
     if [ $FLAGS_ssh_agent -eq $FLAGS_TRUE ]; then
       TARGET_DIR="$(readlink -f "${FLAGS_chroot}/home/${USER}/.ssh")"
       if [ -n "${SSH_AUTH_SOCK}" \
         -a -d "${HOME}/.ssh" ]
       then
         mkdir -p "${TARGET_DIR}"
         cp -r "${HOME}/.ssh/known_hosts" "${TARGET_DIR}"
+        cp -r "${HOME}/.ssh/config" "${TARGET_DIR}"
         ASOCK="$(dirname "${SSH_AUTH_SOCK}")"
         mkdir -p "${FLAGS_chroot}/${ASOCK}"
         sudo mount --bind "${ASOCK}" "${FLAGS_chroot}/${ASOCK}" || \
           die "Count not mount ${ASOCK}"
       fi
     fi
 
     MOUNTED_PATH="$(readlink -f "${FLAGS_chroot}/dev/pts")"
     if [ -z "$(mount | grep -F "on $MOUNTED_PATH ")" ]
     then
@@ skipping 178 matching lines @@
 # Run command or interactive shell.  Also include the non-chrooted path to
 # the source trunk for scripts that may need to print it (e.g.
 # build_image.sh).
 sudo -- chroot "$FLAGS_chroot" sudo -i -u $USER $CHROOT_PASSTHRU \
   EXTERNAL_TRUNK_PATH="${FLAGS_trunk}" LANG=C SSH_AGENT_PID="${SSH_AGENT_PID}" \
   SSH_AUTH_SOCK="${SSH_AUTH_SOCK}" "$@"
 
 # Remove trap and explicitly unmount
 trap - EXIT
 teardown_env