Drop support for CentOS, test Rocky and Debian in CI (#92)

* Test CentOS 7 in CI

* Drop support for CentOS, test on Rocky and Debian

* Fix reset playbook for Rocky Linux

* Fix typo

* Disable firewalld during testing

Co-authored-by: Techno Tim <timothystewart6@gmail.com>

roles/raspberrypi/tasks/setup/Ubuntu.yml

@@ -0,0 +1,21 @@
+---
+- name: Enable cgroup via boot commandline if not already enabled for Ubuntu on a Raspberry Pi
+  lineinfile:
+    path: /boot/firmware/cmdline.txt
+    backrefs: yes
+    regexp: '^((?!.*\bcgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory\b).*)$'
+    line: '\1 cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory'
+  notify: reboot
+
+- name: Install linux-modules-extra-raspi
+  apt:
+    name: linux-modules-extra-raspi
+    state: present
+
+- name: Teardown
+  when: state == "absent"
+  block:
+    - name: Remove linux-modules-extra-raspi
+      apt:
+        name: linux-modules-extra-raspi
+        state: absent