Add VipMap output to the top level stack output. VipMap is a mapping
from each network to the VIP address on that network. Also includes the
Redis VIP.
This output facilitates deploying split-stack so you can feed the VIP
addresses from VipMap as inputs into the services stack.
implements blueprint split-stack-default
Change-Id: I245920994613c9bd10801c25fa545267aa49b239