ceph-defaults: remove rgw from ceph_conf_overrides

The [rgw] section in the ceph.conf file or via the ceph_conf_overrides
variable doesn't exist and has no effect.
To apply overrides to all radosgw instances we should use either the
[global] or [client] sections.
Overrides per radosgw instance should still use the
[client.rgw.{instance-name}] section.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1794552

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>
(cherry picked from commit 2f07b85131)

group_vars/all.yml.sample

@@ -532,7 +532,7 @@ dummy:
 # instead of [client.radosgw.*].
 # For more examples check the profiles directory of https://github.com/ceph/ceph-ansible.
 #
-# The following sections are supported: [global], [mon], [osd], [mds], [rgw]
+# The following sections are supported: [global], [mon], [osd], [mds], [client]
 #
 # Example:
 # ceph_conf_overrides:

group_vars/rhcs.yml.sample

@@ -532,7 +532,7 @@ ceph_iscsi_config_dev: false
 # instead of [client.radosgw.*].
 # For more examples check the profiles directory of https://github.com/ceph/ceph-ansible.
 #
-# The following sections are supported: [global], [mon], [osd], [mds], [rgw]
+# The following sections are supported: [global], [mon], [osd], [mds], [client]
 #
 # Example:
 # ceph_conf_overrides:

roles/ceph-defaults/defaults/main.yml

@@ -524,7 +524,7 @@ rgw_pull_proto: "http" # should be the same as rgw_multisite_proto for the maste
 # instead of [client.radosgw.*].
 # For more examples check the profiles directory of https://github.com/ceph/ceph-ansible.
 #
-# The following sections are supported: [global], [mon], [osd], [mds], [rgw]
+# The following sections are supported: [global], [mon], [osd], [mds], [client]
 #
 # Example:
 # ceph_conf_overrides: