Increase bm node memory

devtest now uses 2048 and 1024 isn't enough to start a VM on the
overcloud.

Change-Id: Ie7b822d49e6248b46eb0c25e9c6474074306189d
Use the rc files supplied in tripleo incubator

Change-Id: I6ca8eaaca6a44e650d7547338385c98e98cef2c4
Merge "Use the rc files supplied in tripleo incubator"
Merge "Increase bm node memory"