[Ceph] Unable to set or get global configuration values via cephadm-ansible task "ceph_config"

Issue

• Unable to apply and get the value of any Ceph global configuration parameter via cephadm-ansible task ceph_config. But at the same can be achieved via command ceph config get/set global <configuration parameter> [<value>]

  Example:

  $ ansible-playbook -i hosts cluster-config_new.yml 
  
  PLAY [set osd_pool_default_size]    **********************************************************************************************************************************************************************************
  
  TASK [set the osd_pool_default_size configuration]    ****************************************************************************************************************************************************************
  fatal: [NODE1]: FAILED! => changed=false 
   ansible_facts:
     discovered_interpreter_python: /usr/libexec/platform-python
   msg: Can't get current value. who=global option=osd_pool_default_size
   rc: 1
  
  PLAY RECAP    ********************************************************************************************************************************************************************************************************
  NODE1                : ok=0    changed=0    unreachable=0    failed=1    skipped=0    rescued=0    ignored=0