Helm should include appVersion in it's idempotence check

[nat45928]

SUMMARY

When re-deploying a Helm chart using Ansible I noticed no deployment was preformed and the console output listed my task as ok instead of changed. It appears that the Helm module only uses the chart key to determine if a Chart needs to be upgraded during execution, see here. This check should consider the appVersion specification of the chart as well.

I saw a few other related issues looking to implemented helm-diff as well which be a more complete solution.

ISSUE TYPE

• Bug Report

COMPONENT NAME

community.kubernetes.helm

ANSIBLE VERSION

ansible 2.9.12
  config file = None
  configured module search path = ['/<path>/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /<path>/.venv/lib/python3.8/site-packages/ansible
  executable location = /<path>/.venv/bin/ansible
  python version = 3.8.2 (default, Jul 16 2020, 14:00:26) [GCC 9.3.0]

CONFIGURATION

OS / ENVIRONMENT

STEPS TO REPRODUCE

Modify a chart's appVersion and re-run the Helm task. Observe the Helm chart is not updated even though the Chart specification has changed.

EXPECTED RESULTS

Charts that change the appVersion key should be re-deployed.

ACTUAL RESULTS

The deployed release remains unchanged.