Add api_versions to helm_template

[benbz]

SUMMARY

Allows passing of additional Kubernetes API versions to helm template such that chart templates that are gated on Capabilities.APIVersions having e.g. CRDs can render those templates rather than them being blank.

ISSUE TYPE

• Feature Pull Request

COMPONENT NAME

helm_template

ADDITIONAL INFORMATION

Inspired by #587 (comment)

Setup:

$ cat helm_template_test/Chart.yaml 
apiVersion: 2
name: ansible-test
version: 0.0.0-dev

$ cat helm_template_test/templates/capabilities.yaml 
{{- if $.Capabilities.APIVersions.Has "monitoring.coreos.com/v1/ServiceMonitor" }}
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: {{ $.Release.Name }}-haproxy
  namespace: {{ $.Release.Namespace }}
spec:
  endpoints:
  - interval: 30s
    port: haproxy-metrics
  selector:
    matchLabels:
      app.kubernetes.io/instance: haproxy
{{- end }}

Before:

$ cat helm_template_test.yaml 
---
- hosts: localhost
  connection: local
  tasks:
  - kubernetes.core.helm_template:
      release_name: ansible-test
      release_namespace: ansible
      chart_ref: helm_template_test
    register: helm_templates

  - debug:
      msg: "{{ helm_templates.stdout }}"

$ ansible-playbook helm_template_test.yaml    
[WARNING]: No inventory was parsed, only implicit localhost is available
[WARNING]: provided hosts list is empty, only localhost is available. Note that the implicit localhost does not match 'all'

PLAY [localhost] *********************************************************************************************************************************************************************************************************************

TASK [Gathering Facts] ***************************************************************************************************************************************************************************************************************
ok: [localhost]

TASK [kubernetes.core.helm_template] *************************************************************************************************************************************************************************************************
changed: [localhost]

TASK [debug] *************************************************************************************************************************************************************************************************************************
ok: [localhost] => {
    "msg": "\n"
}

PLAY RECAP ***************************************************************************************************************************************************************************************************************************
localhost                  : ok=3    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0  

After:

$ cat helm_template_test.yaml 
---
- hosts: localhost
  connection: local
  tasks:
  - kubernetes.core.helm_template:
      release_name: ansible-test
      release_namespace: ansible
      chart_ref: helm_template_test
      api_versions:
      - monitoring.coreos.com/v1/ServiceMonitor
    register: helm_templates

  - debug:
      msg: "{{ helm_templates.stdout }}"

$ ansible-playbook helm_template_test.yaml
[WARNING]: No inventory was parsed, only implicit localhost is available
[WARNING]: provided hosts list is empty, only localhost is available. Note that the implicit localhost does not match 'all'

PLAY [localhost] *********************************************************************************************************************************************************************************************************************

TASK [Gathering Facts] ***************************************************************************************************************************************************************************************************************
ok: [localhost]

TASK [kubernetes.core.helm_template] *************************************************************************************************************************************************************************************************
changed: [localhost]

TASK [debug] *************************************************************************************************************************************************************************************************************************
ok: [localhost] => {
    "msg": "---\n# Source: ansible-test/templates/capabilities.yaml\napiVersion: monitoring.coreos.com/v1\nkind: ServiceMonitor\nmetadata:\n  name: ansible-test-haproxy\n  namespace: ansible\nspec:\n  endpoints:\n  - interval: 30s\n    port: haproxy-metrics\n  selector:\n    matchLabels:\n      app.kubernetes.io/instance: haproxy\n"
}

PLAY RECAP ***************************************************************************************************************************************************************************************************************************
localhost                  : ok=3    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

[softwarefactory-project-zuul]

Build succeeded.
https://ansible.softwarefactory-project.io/zuul/buildset/75082038007d4cd49176befdcbe43cf4

✔️ ansible-galaxy-importer SUCCESS in 4m 06s
✔️ build-ansible-collection SUCCESS in 5m 38s