Initial AlmaLinux support (#7538)

* AlmaLinux: ansible>2.9.19 is needed to know about AlmaLinux

* AlmaLinux: identify as a centos derrivative

* AlmaLinux: add AlmaLinux to checks for CentOS

* Use ansible_os_family to compare family and not distribution

roles/bootstrap-os/README.md

@@ -35,7 +35,7 @@ Variables are listed with their default values, if applicable.
 * `coreos_locksmithd_disable: false`
   Whether `locksmithd` (responsible for rolling restarts) should be disabled or be left alone.
 
-#### CentOS/RHEL
+#### CentOS/RHEL/AlmaLinux
 
 * `centos_fastestmirror_enabled: false`
   Whether the [fastestmirror](https://wiki.centos.org/PackageManagement/Yum/FastestMirror) yum plugin should be enabled.

roles/bootstrap-os/defaults/main.yml

@@ -1,5 +1,5 @@
 ---
-## CentOS/RHEL specific variables
+## CentOS/RHEL/AlmaLinux specific variables
 # Use the fastestmirror yum plugin
 centos_fastestmirror_enabled: false
 

roles/bootstrap-os/tasks/main.yml

@@ -7,7 +7,7 @@
   check_mode: false
 
 - include_tasks: bootstrap-centos.yml
-  when: '''ID="centos"'' in os_release.stdout_lines or ''ID="ol"'' in os_release.stdout_lines'
+  when: '''ID="centos"'' in os_release.stdout_lines or ''ID="ol"'' in os_release.stdout_lines or ''ID="almalinux"'' in os_release.stdout_lines'
 
 - include_tasks: bootstrap-redhat.yml
   when: '''ID="rhel"'' in os_release.stdout_lines'