Wire in Controller pre-deployment extraconfig

Wire in Controller pre-deployment extraconfig

The recently added cinder-netapp extraconfig contains some additional
hieradata which needs to be applied during the initial pre-deployment
phase, e.g in controller-puppet.yaml (before the manifests are applied)
so wire in a new OS::TripleO::ControllerExtraConfigPre provider resource
which allows passing in a nested stack (empty by default) which contains
any required "pre deployment" extraconfig, such as applying this hieradata.

Some changes were required to the cinder-netapp extraconfig and environment
such that now the hieradata is actually applied, and the parameter_defaults
specified will be correctly mapped into the StructuredDeployment.

Change-Id: I8838a71db9447466cc84283b0b257bdb70353ffd