Create Proposal - Do not preassign nodes to roles

[tbeitter]

If you create a new proposal there are some nodes preassigned to the roles. As
this choice rarely fits the desired setup it isn't very useful.

For Example: If you have 10 or more nodes in your environment it is a little
bit annoying if you have to remove every single node from the swift-storage
role, as every system got preassigned.

[aspiers]

Downstream bug is here: https://bugzilla.novell.com/show_bug.cgi?id=784414

although that is probably currently internal-only.

[aspiers]

I'm not 100% sure but I think this behaviour (whether or not to pre-assign) should probably be determined per barclamp. For example it doesn't make sense to pre-assign for the nova/swift/ceph barclamps where each node in the proposal has specific dependencies. But there may be barclamps where it really doesn't matter which node(s) get assigned.

[rperryman]

I believe this should be moved to a Feature enhancement, as the current selection process is to use all nodes.

[aspiers]

Labelled as enhancement