rabbitmq_messages_uncommitted broken because rabbitmqctl list_channels doesn't take a -p argument

[shallot]

Hi,

The current version of this plugin in this repository doesn't work, it keeps emitting:

 Error output from rabbitmq_messages_uncommitted:
     Error: {bad_argument,'-p'}

It seems to be missing ask/rabbitmq-munin@ce6ac82#diff-499ba6d672b12dd33c88ef7eb95f1ec9
(or a variant thereof)

[shallot]

It seems it's actually completely broken because it thinks that RabbitMQ will record a queue for a channel listing of uncomitted messages, but it simply doesn't

ask/rabbitmq-munin#15 (comment)

[sumpfralle]

could you please translate this into a changeset in order to get the plugin working again?
(I am not aware of a munin developer with a good knowledge about rabbitmq's internals)

[sumpfralle]

@shallot: ping?

[shallot]

Sorry, I happened to stop using this particular combination in the meantime

[github-actions]

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