adding a force cache update task in case the yum repositories change

roles/config_repos/tasks/main.yml

@@ -39,7 +39,8 @@
   - monashhpc_base.repo
   - monashhpc_others.repo
   - epel.repo
-
+  register: addingrepos
+  
 - name: get enabled repos
 #shell: yum repolist | grep -v "repo id" | grep -v "Loaded plugins" | head -n -1 | cut -f 1 -d '/' | sed -s 's/\!//'
   shell: yum repolist all | grep enabled | cut -f 1 -d '/' | sed -s 's/\!//'
@@ -80,3 +81,13 @@
   apt: update_cache=True
   become: true
   when: ansible_os_family=="Debian"
+
+- name: force refresh of the repository cache   
+  shell: |
+    yum clean all
+    yum updateinfo
+    yum makecache
+  become: true
+  when: addingrepos.changed
+  args:
+    warn: False
\ No newline at end of file