Ceph - Director deployed Ceph is successful, but fails to implement journal_size overrides in config

Issue

• Using Director to deploy Ceph I want to specify a custom journal_size setting for my Ceph cluster.
• Openstack Documentation suggests:

parameter_defaults:
  CephConfigOverrides
    journal_size: 2048
    max_open_files: 131072

• The override CephConfigOverrides values are correctly reflected in the [global] section of the ceph.conf config file after the installation.

[global]
journal_size: 2048
max_open_files: 131072

• However, the CephConfigOverrides values do not populate in the [osd] section of the ceph.conf, resulting in failed journal_size specifications.

[osd]
osd journal size = 5120
osd mkfs options xfs = -f -i size=2048
osd mkfs type = xfs
osd mount options xfs = noatime,largeio,inode64,swalloc