* [updategraph] add support to use preset config instead of default minigraph
* Fix variable case
* Remove default minigraph case
* Remove default minigraphs and add default_sku files
* [platform/haliburton] Fix kernel panic when remove smc module.
* [platform/haliburton] Chanage sysfs to support module interrupt
* [device/haliburton] Update sfputil to use new sysfs.
* [device/haliburton] sfputil to support xcvrd monitoring.