-Add: Test cases for ansible_parent_role_names and ansible_parent_role_paths
-Add: ansible_parent_role_names/paths variables for when a role is being included by another role.
* Add info about loop based on jinja2 loop var
* ansible_loop
* Update test count
* Add extended loop_control that defines whether ansible_loop should be added
* Extended needs to be defaulted
* Revert "Update test count"
This reverts commit f1e93ee469825f4cdcd90fb28667d29aa088275c.
* Add docs about loop_control.extended
* Add revindex and revindex0
* Document ansible_loop in special vars
* Add changelog fragment
* Add tests, change items to allitems so that dot notation works, fix logic error with previtem
* -Change: Include dependency role names in `role_names`.
-Add: `play_role_names` magic variable to include only explicitly named roles (formerly `role_names`).
-Add: `dependent_role_names` magic variable to include all dependency names for all roles.
* -Change: use the ansible_ prefix for new magic variables.
-Change: keep `role_names` as a deprecated variable, using the old functionality.
* -Add: changelog fragment for the role_names rework.
* -Add: Tests for the role_names (and ansible_*role_names) special variables
* -Fix: resolve erroneous documentation snippet that was introduced after rebasing.
* -Fix: explicitly sort to ensure list comparison works in test.
