update_chroot: autodiscard all config updates

* This is now safe to do, since the only protected files are exactly
the ones that have been autogenerated during chroot creation and may
not be overwritten.

BUG=chromium-os:13987
TEST=update the chroot

Change-Id: Ica4d8328b21089b23e2b0e8a29530cedddabc299
Reviewed-on: https://gerrit.chromium.org/gerrit/10166
Commit-Ready: Zdenek Behan <zbehan@chromium.org>
Reviewed-by: Zdenek Behan <zbehan@chromium.org>
Tested-by: Zdenek Behan <zbehan@chromium.org>
1 file changed
tree: 9db055f05b77722780f89e73a4f696f8730998e8
  1. .gitignore
  2. archive_hwqual
  3. bash_completion
  4. bin/
  5. build_image
  6. build_kernel_image.sh
  7. build_library/
  8. call_autoserv.py
  9. check_control_files.sh
  10. chroot_version_hooks.d/
  11. clean_loopback_devices
  12. common.sh
  13. cros_deps_diff
  14. cros_generate_breakpad_symbols
  15. cros_generate_deps_graphs
  16. cros_generate_stacks_bvt
  17. cros_show_stacks
  18. dot_helper.py
  19. enable_localaccount.sh
  20. enter_chroot.sh
  21. exclude-list
  22. fixup_image_for_qemu.py
  23. get_latest_image.sh
  24. get_package_list
  25. image_to_usb.sh
  26. image_to_vm.sh
  27. lib/
  28. make_chroot
  29. make_developer_script_runner.sh
  30. make_netboot.sh
  31. mod_for_factory_scripts/
  32. mod_for_test_scripts/
  33. mod_image_for_recovery.sh
  34. mod_image_for_test.sh
  35. mod_test_image_for_pyauto.sh
  36. mount_gpt_image.sh
  37. remote_access.sh
  38. run_chroot_version_hooks
  39. sdk_lib/
  40. serve_factory_packages.py
  41. set_shared_user_password.sh
  42. sha256_partitions.sh
  43. ssh_test.sh
  44. start_devserver
  45. update_bootloaders.sh
  46. update_chroot
  47. update_kernel.sh
  48. upload_symbols
  49. verify_rootfs_chksum.sh