Better document $controller_node_internal and $controller_node_public

[Michael DeHaan]

These two settings in site.pp are somewhat confusing and don't really explain what they do. You have to grep through the puppet modules to get there.

Controller node public should say "This is the interface that you will use to connect to the Horizon GUI" or similar

Controller node internal should say "This is the interface that will be used for external backend communication" or similar

[Daneyon Hansen (danehans)]

nd now we also have a cross_talk_ip. We need to remove the overlap of these variables.

[Ian Wells (ijw-ubuntu)]

They do technically serve separate functions (crosstalk_ip is where the GRE tunnels terminate and as you might want your Openstack-internal network not to be flooded by customer traffic you might want to separate the two) but for 99% of people I don't think the separation is important.

[Ian Wells (ijw-ubuntu)]

We agreed that, in the event that a client wants separate IPs, that's quite a technical decision and it can still be implemented in the manifest file anyway (rather than the modules) so it's acceptable to simplify to manifests for the far more common case.

[Pradeep Kilambi (pkilambi)]

https://github.com/CiscoSystems/grizzly-manifests/pull/2