tap_migrations: add opencv (even although old).
xctool 0.1.14

Release notes and changelog: https://github.com/facebook/xctool/releases/tag/v0.1.14

Closes #24677.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
RethinkDB 1.11.0

Closes #24676.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>