Make Rabbit parameters consistent
Make Rabbit parameters consistent

The Qdr service appears to have hijacked these parameters for its
own use.  I don't think it should have done that in the first place,
but at least the parameter descriptions need to be kept consistent
with the other services.

Partial-Bug: 1700664
Change-Id: I6d9a075a99f33e9deacaf5b10a6ea7b0a234b942

dprince/tripleo-heat-templates,dprince/tripleo-heat-templates,openstack/tripleo-heat-templates,openstack/tripleo-heat-templates