enter_chroot: bind mount ~/.ssh/known_hosts

We want to keep known_hosts in sync inside/outside of the chroot so
people are not surprised when things change randomly.

TEST=`cros_sdk` mounts known_hosts inside the chroot

Change-Id: Ia920cc2f3e1da070a349007f37b5f04fa5f847ac
Reviewed-on: https://chromium-review.googlesource.com/191880
Reviewed-by: Grant Grundler <grundler@chromium.org>
Reviewed-by: David James <davidjames@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Reviewed-by: Yu-Ju Hong <yjhong@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
1 file changed