Feat pkr tmpl proxy almalinux

Closes #130 (closed)

Make changes to proxy packer template so that it runs without any issues as we move the base OS from Centos to Almalinux

ansible/cluster.yml

@@ -3,7 +3,6 @@
   hosts: all
   become: true
   roles:
-    - { name: 'fix_centos_repo', tags: 'fix_centos_repo' }
     - { name: 'cheaha.node', tags: 'cheaha.node' }
     - { name: 'nfs_mounts', tags: 'nfs_mounts' }
     - { name: 'ldap_config', tags: 'ldap_config' }