RHEL/CentOS/Fedora - Report pending update with ansible

check-for-update.yml

- name: check for updates
  hosts: all
  gather_facts: true
  become: yes

  tasks:

  - name: check for updates (yum)
    yum: list=updates update_cache=true
    register: updates
    when: ansible_distribution_major_version|int < 22

  - name: check for updates (dnf)
    dnf: list=updates
    register: updates
    when: ansible_distribution_major_version|int > 21

  - name: generate report
    local_action: template src=./report.csv.j2 dest=./report.csv

  - name: print summary results
    debug: msg="{{updates.results|count}} pending updates"

report.csv.j2

hostname,name,version,release,arch,repo
{% for elem in updates.results %}
{{ansible_fqdn}},{{elem.name}},{{elem.version}},{{elem.release}},{{elem.arch}},{{elem.repo}}
{% endfor %}