Description of problem:

Deployed a containerized RHCS 4.3 cluster with rgw parameters in all.yml under ceph_conf_overrides.
Since upgrading to RHCS 5.3, none of the rgw parameters listed in ceph_conf_overrides have been applied to the RGW configuration.

ceph_conf_overrides in all.yml
------------------------------

ceph_conf_overrides:
  global:
    mon_allow_pool_delete: true
  client.rgw.node3.rgw0:
    rgw_dns_name: node3-rgw0
    rgw_override_bucket_index_max_shards: 16
    rgw_bucket_default_quota_max_objects: 1638400
  client.rgw.node3.rgw1:
    rgw_dns_name: node3-rgw1
    rgw_override_bucket_index_max_shards: 16
    rgw_bucket_default_quota_max_objects: 1638400
  client.rgw.node2.rgw0:
    rgw_dns_name: node3-rgw0
    rgw_override_bucket_index_max_shards: 16
    rgw_bucket_default_quota_max_objects: 1638400
  client.rgw.node2.rgw1:
    rgw_dns_name: node2-rgw1
    rgw_override_bucket_index_max_shards: 16
    rgw_bucket_default_quota_max_objects: 1638400

I have attached the following outputs to the BZ:
ceph_config_dump.txt (After 5.3 upgrade)
rgw_configuration_applied.txt (After 5.3 upgrade)

Version-Release number of selected component (if applicable):
RHCS 5.3

How reproducible:
Always

Steps to Reproduce:
1. Create a containerized RHCS 4.3 cluster with config overrides for RGW
2. Upgrade the cluster to RHCS 5.3
3. Check if the config_overrides parameters actually applied

Actual results:
None of the config overrides parameters are applied t the actual configuration

Expected results:
The config_overrides parameter should apply