This change adds ironic.drivers.generic.GenericHardware which contains
useful defaults. Other hardware types are recommended to derive from it.
Add reasonable vendor-independent defaults to enabled_{deploy,raid,boot}_interfaces
configuration options. Add an entry point for "inspector" inspect implementation.
Also adding ironic.drivers.generic.ManualManagementHardware. This hardware
type is mostly introduced to make unit testing of GenericHardware possible.
However, it also has a potential use case: hardware not covered by
an existing driver or when an existing driver misbehaves. I personally
know people using fake_pxe currently in production for such use cases.
Change-Id: I328191524eb71c2ef51fec02c9cb28087dcf663b
Partial-Bug: #1524745
2777814449