Made the Compute as a composable service with Nuage.
Moved all the Nuage specific parameters from extraconfig to be part of this service.
Change-Id: Ic83e9c18d09fbba62bb5d8a12e28a23127f4197d
Adding composable services for Nuage mechanism driver for ML2. This
is separate from Nuage as the core plugin and intentional duplication
of Nuage under puppet services. Parameters required for working of
Nuage as mechanism driver are also added.
Change-Id: I2b564610721152c4f4dab9da79442256ba8d0b33
Added ExtraConfig templates and environment files for Nuage specific parameters.
Modified overcloud_compute.pp and overcloud_controller.pp to conditionally
include Nuage plugin and agents.
Change-Id: I95510c753b0a262c73566481f9e94279970f4a4f