add fedora-upgrade role, change package update headers to be more descriptive

roles/fedora-upgrade/tasks/main.yml

@@ -0,0 +1,4 @@
+---
+
+- include_tasks: tasks.yml
+  when: (ansible_distribution in ["Fedora"] and not is_atomic) and (ansible_distribution_version != fedora_target and ansible_distribution_version >= fedora_minimum)

roles/fedora-upgrade/tasks/tasks.yml

@@ -0,0 +1,23 @@
+---
+
+- name: install dnf-plugin-system-upgrade
+  dnf:
+    name: dnf-plugin-system-upgrade
+    state: present
+
+- name: stage upgraded packages for fedora {{ fedora_target }}
+  shell: dnf -y system-upgrade download --releasever="{{ fedora_target }}"
+  warn: false
+  register: dnf_result
+  changed_when: "'Download complete' in dnf_result.stdout"
+
+- name: trigger upgrade
+  shell: nohup bash -c 'sleep 2 && dnf system-upgrade reboot' &
+  register: upgraded_reset
+  when: (dnf_result is changed)
+
+- name: wait for hosts to upgrade, reboot, and return
+  wait_for_connection:
+    timeout: 900
+    delay: 20
+  when: upgraded_reset is changed