Anaconda FCoE Boot Support

Summary

Add FCoE support to anaconda's boot and storage code.

FCoE devices will be recognized and the installation will offer to use them.

Improved hardware support

The code is written and is currently in debug.

Testing will require FCoE hardware, which is not terribly common.

We will have to verify the following areas of functionality:

recognize devices and install
- on new partitions
- on existing partitions
- on new LVM logical volumes
- on preexisting LVM logical volumes
creation of encrypted block devices at various levels in the device stack (partition, PV, LV, mdarray, &c)
detection of arbitrarily complex device configurations (luks, mdraid, lvm, &c)
management and configuration of existing encrypted block devices
automatic partitioning of systems
clearing of existing devices/partitions
removal of existing devices
reconfiguration of existing devices
detection of existing upgradable installations with widely varied storage configurations
rescue mounting of existing systems with a wide variety of storage configurations

This should improve the user's experience with regard to the storage configuration portion of system installation.

No impact unless you have this hardware.

Revert to previous codebase.

Will need to include in Installation Guide.

Not terribly applicable because this hardware is not common, but worth a small mention.