LAKITU: Disable bracketed paste mode in readline

The new readline 8.1 release enabled bracketed paste mode by default.
This broke some testing software that interacts with COS over the serial
console, which didn't expect to see the bracketed paste mode control
sequences. Since there is non-trivial risk of further regressions here,
and the value of bracketed paste mode seems minimal (we haven't seen
requests in this area), let's disable it by default.

If someone really wants it, they can configure /etc/inputrc in
cloud-init.

BUG=b/232085583
TEST=presubmit
RELEASE_NOTE=Disabled bracketed paste mode by default in readline.

Change-Id: I461f6089d5b1dfd131e3bcd15d4eb17817ffdee0
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/chromiumos-overlay/+/32846
Reviewed-by: Roy Yang <royyang@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
3 files changed