Add ability to specify custom extension in inventory

[uberspot]

Following roboll/helmfile#565
It makes sense to allow custom extensions for inventory files (yml or yaml) to make kapitan more flexible. :)

[adrianchifor]

Inventory files are interpreted by reclass. Relevant TODO https://github.com/salt-formulas/reclass/blob/develop/doc/source/todo.rst#configurable-file-extension.

We could make an MR to update reclass/storage/yaml_fs/__init__.py and reclass/storage/yaml_fs/directory.py as it hardcodes FILE_EXTENSION = '.yml'.

[pranavgupta1234]

I would like to take up this issue. Should I open an corresponding issue on https://github.com/salt-formulas/reclass ? Is there any plan to update reclass to v1.6.0 ?

[uberspot]

Go for it. We could also make a PR in kapitan to update reclass if it's not breaking.

[pranavgupta1234]

Ref : salt-formulas/reclass#85

[pranavgupta1234]

@uberspot salt-formulas/reclass#85 is merged now.

[uberspot]

Wonderful! :) They haven't pushed a new release though so I doubt we can upgrade reclass at the moment unless we maintain our own mirror. :/
Also this regression still remains salt-formulas/reclass#84

[adrianchifor]

For visibility, we are waiting for salt-formulas/reclass#87 to be merged and for reclass to make a new release.

[uberspot]

This has now been added in kapitan 0.27.3 after forking and updating our usage of reclass. :)
Closing as done.