Consolidate CloudStack metadata providers #856
Description
Feature Request
Environment
CloudStack
Desired Feature
Afterburn currently has two separate CloudStack providers, cloudstack-metadata and cloudstack-configdrive, depending on where instance metadata is coming from. These provider names diverge from Ignition (which just uses cloudstack), so on this platform, Afterburn can't transparently detect the platform by checking the ignition.platform.id karg.
Consolidate the two providers under the name cloudstack. This was previously done for OpenStack in #462.