Added documentation

Change-Id: I4cb4c8c56642337899d0865c147b54df72b2c1fa
diff --git a/doc/source/roles/ceph_osd/index.rst b/doc/source/roles/ceph_osd/index.rst
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+.. Copyright (C) 2022 VEXXHOST, Inc.
+.. SPDX-License-Identifier: Apache-2.0
+
+``ceph_osd``
+============
+
+.. toctree::
+   :maxdepth: 2
+
+   defaults/main
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