* Make undefined variables in handler names non-fatal if the handler is not used
* If the handler has no way to be notified (i.e. the name can't be templated and the handler has no listen topics), display a warning
* Add tests for variables in handler names
* changelog
* free strategy - include failed hosts that were notified so --force-handlers is used
* trim line length a bit
* Loop over the force handler tests with the strategies linear and free
* rename changelog
* Use the play iterator instead of TQM for accurate failure representation in blocks
* Remove hack in a backwards compatible way for 3rd party plugins
* Fix notifying handlers by using an exact match rather than a string subset if listen is text rather than a list
* Enforce better type checking for listeners
* Share code for validating handler listeners
* Add test for handlers without names
* Add test for templating in handlers
* Add test for include_role
* Add a couple notes about 'listen' for handlers
* changelog
* Add a test for handlers without names
* Test templating in handlers
* changelog
* Add some tests for include_role
* Add a couple notes about 'listen' for handlers
* make more sense
* move local function into a class method
* Ensure that include_role properly fires handlers
include_role needs to ensure that any handlers included
with the role are added to the _notified_handler and
_listening_handler lists of the TaskQueueManager, otherwise
it fails when trying to run the handler.
Additionally, the handler needs to be added to the
PlayIterator's `_uuid_cache` or it fails after running
the handler
Add more uuid debug statements - this code was hard
to debug with existing debug statements, so add more
uuid information at little additional output cost.
Fixes#18411
* Add tests for include_role handlers
Tests for #18411
Martin Krizek