Revert "beaker: Drop support for EL8"

This reverts commit 2496111.

Author: evgeni

roles/beaker/tasks/main.yml

@@ -14,10 +14,18 @@
     name: git
     state: installed
 
+- name: Enable ruby 2.7 module
+  command: dnf module enable -y ruby:2.7
+  when: ansible_distribution_major_version == "8"
+
 - name: Enable ruby 3.3 module
   command: dnf module enable -y ruby:3.3
   when: ansible_distribution_major_version == "9"
 
+- name: enable powertools
+  command: dnf config-manager --set-enabled powertools
+  when: ansible_distribution_major_version == "8"
+
 - name: enable CRB
   command: dnf config-manager --set-enabled crb
   when: ansible_distribution_major_version == "9"