Show a coherent error on bulk change lock timeout
Show a coherent error on bulk change lock timeout

Since it's possible that the user will try to get patches while the
update script is running, ensure we show a sensible error if the script
times out waiting for a lock.

Signed-off-by: Paul Eggleton <737d4dae46a541673d7bf4e0d5b32714b16528d8@linux.intel.com>

bartosh/layerindex-web,bartosh/layerindex-web,bartosh/layerindex-web