A hook which invokes os-apply-config.

The intent is for this element (hook script) to be used in place of the one in tripleo-image-elements which relies on an external signal handling shell script at the end of the os-refresh-config run (99-refresh-completed). This version will run os-apply-config and return a signal immediately. Because it uses the heat-hook mechanisms it also supports a broader set of signal handling capabilities… which 99-refresh-completed doesn’t fully support.

It is worth noting that this hook runs os-apply-config against all the accumulated metadata, not just data supplied to an individual hook.

To use this hook set the group property to apply-config instead of os-apply-config in your Heat software configuration resources.