Comment 5 for bug 1440134

FIY we indeed decreased kombu_reconnect_delay to default 1 second in change https://review.openstack.org/#/q/Id7bac2d1988b9f91ea19edc0fe8a4bdc9958d458,n,z

which for now went into Mitaka only. And I do suggest to port that change back to other branches as well.