copr-be-dev: try building epel-8 against rhel+epel

roles/copr/backend/tasks/setup_provisioning_environment.yml

@@ -14,6 +14,20 @@
   tags:
   - provision_config
 
+- name: "Link Mock EPEL 8 configs to rhel+epel-8"
+  file:
+    src: "/etc/mock/rhel+epel-8-{{ item }}.cfg"
+    force: true
+    path: "/etc/mock/epel-8-{{ item }}.cfg"
+    state: link
+  loop:
+    - x86_64
+    - aarch64
+    - ppc64le
+  tags:
+  - provision_config
+  when: devel|bool
+
 - name: resalloc, generate vars.yml file
   template:
     src: "{{ roles_path }}/copr/backend/templates/provision/{{ item }}"