Support full configuration for image generation, including image
outputs, support most features (where applicable) for all image output
types, unify image generation process.
Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
Use `udevd` rules to create stable interface names.
Link controllers should wait for `udevd` to settle down, otherwise link
rename will fail (interface should not be UP).
Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>