Classic drivers will be deprecated, add hardware types for
staging drivers. "staging-" prefix used for entrypoints.
The DevStack plugin is amended to enable all hardware types and
interfaces registered by the ironic-staging-driver package
to test that they do not break ironic-conductor start when enabled
For this a new script is added to read entrypoints registered by a Python
As previousely, by default `iboot` drivers are not enabled
as they require a client library not available on PyPI.