* add check_mode option for tasks
includes example testcases for the template module
* extend check_mode option
* replace always_run, see also proposal rename_always_run
* rename always_run where used and add deprecation warning
* add some documentation
* have check_mode overwrite always_run
* use unique template name to prevent conflicts
test_check_mode was right before, but failed due to using the same filename as other roles
* still mention always_run in the docs
* set deprecation of always_run to version 2.4
* fix rst style
* expand documentation on per-task check mode
Our custom encoder for the to_json filter was simply returning the
object if it was not a HostVars object, leading in some cases to a
TypeError when the data contained an undefined variable. This lead
to an odd error message being propagated up, so we now properly catch
this as an undefined variable error.
Fixes#15610
* Port urls.py to python3
Fixes (largely normalizing byte vs text strings) for python3
* Rework what we do with attributes that aren't set already.
* Comments
Which we're use on a case-by-case basis if we find people were actually
using comma-separated strings for list values outside of hosts. Support
for doing so is now deprecated and users should instead use the full
YAML syntax for lists of values.
Fixes#15291
FieldAttributes will now by default not be post_validated unless a flag
is set on them in the class, as a large number of fields are really there
simply to be inherited by Task/PlayContext and shouldn't be templated too
early.
The other (unrelated to the base issue) in #12084 is also fixed here, where
the roles field is loaded before vars/vars_files, meaning there are no vars
yet loaded in the play when the templating occurs.
Fixes#12084
`if method in dir(self):` is very inefficient:
- it must construct a list object listing all the object attributes & methods
- it must then perform a O(N) linear scan of that list
Replace it with the idiomatic `if hasattr(self, method):`, which is a
O(1) expected time hash lookup.
Should fix#11981.
Also making PlayContext a child class of the Playbook Base class,
which gives it access to all of the FieldAttribute code to ensure
field values are correctly typed after post_validation
Fixes#11381
