Add missing yum repo to ood

ansible/group_vars/ood

 ---
   yum_repo_files:
+    - ceph.repo
     - cm.repo
     - dell-system-update.repo
+    - elastic.repo
+    - nux-dextop.repo
   pkg_list:
     - "BIOS_8JY6W_LN64_2.14.2-2.14.2"
     - "Diagnostics_Application_PX25H_LN64_4301A70_4301.71-4301A70"