Version 3.12 does not import a definitions file correctly

[lukebakken]

Original discussion starts here: #5895 (comment)

Project to reproduce:
https://github.com/lukebakken/rabbitmq-server-5895-mqtt

docker compose up will start up the pivotalrabbitmq/rabbitmq:v3.12.0-beta.1-otp-max-bazel and try to import definitions, which won't happen. It's not just docker, as this doesn't work either:

make RABBITMQ_CONFIG_FILE="/home/lbakken/development/lukebakken/rabbitmq-server-5895-mqtt/rabbitmq-local.conf" PLUGINS='rabbitmq_management rabbitmq_top' run-broker

RABBITMQ_IMAGE='rabbitmq:3-management' docker compose up works correctly.

cc @michaelklishin @janiu-001

[lukebakken]

I read the definitions.json file and thoas:decode/1 works, so it's not that 😄

[lukebakken]

Aha, here's a BIG hint:

2023-03-07 16:11:20.252173-08:00 [info] <0.552.0> There are fewer than target cluster size (1) nodes online, skipping queue and binding import from definitions

[janiu-001]

@lukebakken please let me know the new image if the fix is ready

[mkuratczyk]

Once #7535 is merged, it should be fixed

[michaelklishin]

@mkuratczyk has put together a different solution in #7535. The culprit ended up being #7058.