Add documentation of the brokered address space (#440)
Add documentation of the brokered address space (#440)

* Remove TODOs from the rendered page

* Add documentation of the brokered address space

* Address review comments

EnMasseProject/enmasse,jenmalloy/enmasse,EnMasseProject/enmasse,jenmalloy/enmasse,jenmalloy/enmasse,jenmalloy/enmasse,jenmalloy/enmasse,jenmalloy/enmasse,EnMasseProject/enmasse,jenmalloy/enmasse,EnMasseProject/enmasse,EnMasseProject/enmasse,EnMasseProject/enmasse,EnMasseProject/enmasse