9f0ae0b nodedev: Move device enumumeration out of nodeStateInitialize

Authored and Committed by John Ferlan 6 years ago
    nodedev: Move device enumumeration out of nodeStateInitialize
    
    Let's move the udevEnumerateDevices into a thread to "speed
    up" the initialization process. If the enumeration fails we
    can set the Quit flag to ensure that udevEventHandleCallback
    will not run.
    
    Signed-off-by: John Ferlan <jferlan@redhat.com>
    Reviewed-by: Erik Skultety <eskultet@redhat.com>