3.11: definition import ignores virtual hosts' default queue type setting

[ikavgo]

This is in follow-up to #5305. As reported by @adamcasey in #5330 (comment):

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I do think rabbitmqctl import_definitions isn't picking this setting up

1. Create vhost-def.json containing {"vhosts":[{"limits":[],"metadata":{"default_queue_type":"quorum","description":"","tags":[]},"name":"manual-dqt-test"}]}
   1. Worth noting export_definitions does give this output
2. rabbitmqctl import_definitions vhost-def.json
3. rabbitmqctl ctl list_vhosts name,default_queue_type shows all vhosts as default queue type undefined and client-declared queues default to classic

The export / import behaviour here is a little tricky besides this though - imo the perfect outcome would be all queues were declared on import as though the client had re-sent the queue.declare method. I suspect this would require storing what the x-queue-type declaration property was alongside the default queue type though.

[michaelklishin]

Boot time imports were not updated either.

All initial work was done on client operations because that's what the user who needs it at massive scale described.

[ikavgo]

@michaelklishin shall I continue with boot time imports?

[michaelklishin]

@ikvmw sure

[ikavgo]

It looks like boot time imports work now too.