fix(helm): add pyyaml install task for fedora coreos

The `package` ansible module uses the deprecated
`atomic_container` module for managing FCOS packages.

This commit switches FCOS to use the
`community.general_rpm_ostree_pkg` module instead.

roles/kubernetes-apps/helm/tasks/main.yml

@@ -17,12 +17,18 @@
   package:
     name: "{{ pyyaml_package }}"
     state: present
-  when: pyyaml_package is defined
+  when:
+    - pyyaml_package is defined
+    - not is_fedora_coreos
 
 - name: Helm | Install PyYaml [flatcar]
   include_tasks: pyyaml-flatcar.yml
   when: ansible_os_family in ["Flatcar", "Flatcar Container Linux by Kinvolk"]
 
+- name: Helm | Install PyYaml [Fedora CoreOS]
+  include_tasks: pyyaml-fedora-coreos.yml
+  when: is_fedora_coreos
+
 - name: Helm | Download helm
   include_tasks: "../../../download/tasks/download_file.yml"
   vars:

roles/kubernetes-apps/helm/tasks/pyyaml-fedora-coreos.yml

@@ -0,0 +1,9 @@
+---
+- name: Get package facts
+  ansible.builtin.package_facts:
+    manager: rpm
+
+- name: Install PyYAML
+  community.general.rpm_ostree_pkg:
+    name: "{{ pyyaml_package }}"
+  when: "pyyaml_package not in ansible_facts.packages"