There is no record for why we implement the MQ vhost/user creation
outside of the role in the playbook, when we could do it inside the
role.
Implementing it inside the role allows us to reduce the quantity of
group_vars duplicated from the role, and allows us to better document
the required variables in the role. The delegation can still be done
as it is done in the playbook too.
In this patch we remove the test vars and tasks which were duplicated
as they are no longer required.
Change-Id: I7209861cd0b285ce1d641f68d2e97505cd3b1fb8
682764493a