Comment 6 for bug 1899533

Reviewed: https://review.opendev.org/758793
Committed: https://git.openstack.org/cgit/openstack/oslo.messaging/commit/?id=7c9b070f5bc07692c837f9915eb0d8525065d0f6
Submitter: Zuul
Branch: stable/ussuri

commit 7c9b070f5bc07692c837f9915eb0d8525065d0f6
Author: Sean Mooney <email address hidden>
Date: Mon Oct 12 22:43:31 2020 +0100

    add min of 1 to rpc_conn_pool_size

    This change add a min value of 1 to
    [oslo_messaging_rabbit]/rpc_conn_pool_size
    such that there is always at least 1 connection avaiable.

    This change add a runtime check to ensure that
    [oslo_messaging_rabbit]/rpc_conn_pool_size is greater than
    or equal too [oslo_messaging_rabbit]/conn_pool_min_size

    Change-Id: I2ad4b9f1d012c9f0586a932ac27d96da1bcc4e4c
    Closes-Bug: #1899533
    (cherry picked from commit 00d15eaeaba0ded0330cdcec7b19eee3adbfb1e1)
    (cherry picked from commit 8f5847dcbe5144272ff7295fce2b50a9f544e5b0)