copr: backend: experiment with swap=ON and swappiness=5

This is experiment, I configured $Subject manually - and I only want to
not re-set the swap config by ansible playbook.  If everything works
well, we need to enable swap properly.

https://pagure.io/copr/copr/issue/1166

roles/copr/backend/tasks/main.yml

@@ -316,15 +316,15 @@
    fstype: swap
    state: absent
 
-- name: detect if swap is enabled
-  shell: test -z "$(swapon -s)"
-  register: swap_enabled
-  changed_when: false
-  failed_when: false
-
-- name: disable swap so that OOM killer can do his job
-  command: swapoff -a
-  when: swap_enabled.rc != 0
+# - name: detect if swap is enabled
+#   shell: test -z "$(swapon -s)"
+#   register: swap_enabled
+#   changed_when: false
+#   failed_when: false
+# 
+# - name: disable swap so that OOM killer can do his job
+#   command: swapoff -a
+#   when: swap_enabled.rc != 0
 
 - name: setup AWS access
   import_tasks: "aws.yml"