
This patch is adding a periodic task to check for nodes waiting for the ramdisk callback when cleaning is being executed. A new configuration option called "clean_callback_timeout" was added, its value is the number of seconds that the Ironic conductor will wait for the ramdisk to doing the cleaning to contact Ironic back. Defaults to 1800. Closes-Bug: #1483120 Change-Id: Id7f9e9018b5cb2389bbe556171e7a9d46425afba