Fix #9395

Fixes #5865

When they python interpreter is set incorrectly for the machine the file
is being checked for (e.g. for the local or the remote), the error
manifests as a readability or directory missing error which can be very
misleading.

It's up to the module using the set_fs_attributes*/set_mode* methods to
specify the filename of the destination of the symlink if that's really
the file that should be modified.

Half of the fix for:
https://github.com/ansible/ansible-modules-core/issues/778

empty

Listify revert errorhandling

Fixes #9704

Fixes #9663

Fixes #9699

Superceeds e61e8a37

Fixes #9684

Fixes #9669

Fixes #9667

fixes to template function

Expand playbook_dir in time for loading tasks

Fixes #9618

- make sure it calls itself correctly, now passes same params as it recieves
- vars is reserved, changed for templatevars to avoid confustion
- forcing mustaches again since the removal broke 'listification' as per #9622
- fixes incorrectly successful tests using undefined var, now it is defined
- now returns empty list if items is None to avoid errors