Add Amazon Linux 3 (2023) support

- Add Amazon2023.yml core configs
- Create 'linux_package_prereqs' for package installation prior to Splunk
  install, as some features like syslog/logrotate/cron have been removed from
  Amazon's latest distro.

Author: lowell80

roles/splunk/tasks/prereqs.yml

@@ -4,3 +4,10 @@
     name: acl
     state: present
   become: True
+
+- name: install distro specific required packages
+  ansible.builtin.package:
+    name: "{{ linux_package_prereqs }}"
+    state: present
+  when: linux_package_prereqs is defined
+  become: true

roles/splunk/vars/Amazon2023.yml

@@ -0,0 +1,17 @@
+global_bashrc: /etc/bashrc
+chk_config_cmd: chkconfig --add disable-thp
+linux_package_prereqs:
+  - logrotate
+  - rsyslog
+  - cronie
+  - polkit
+linux_packages:
+  - sysstat
+  - telnet
+  - tcpdump
+  - htop
+  - lsof
+  - gdb
+  - bind-utils
+firewall_service: firewalld
+logrotate_file: /etc/logrotate.d/rsyslog