Add glance_store disclaimer to docs
Change added a statement,
agreed upon at the Ocata design summit, concerning the use-at-your-
own-risk nature of glance_store.  This patch updates the glance_store
docs to carry the same disclaimer.
The glance_store library supports the creation, deletion and gather of data
assets from/to a set of several, different, storage technologies.
+.. warning::
+ This library has been extracted from the Glance source code for the
+ specific use of the Glance and Glare projects.
+
+ The API it exposes is not stable, has some shortcomings, and is not a
+ general purpose interface. We would eventually like to change this, but for
+ now using this library outside of Glance or Glare will not be supported by
+ the core team.
+
.. toctree::
:maxdepth: 1
@@ -16,4 +25,3 @@ assets from/to a set of several, different, storage technologies.
* :ref:`genindex`
* :ref:`modindex`
* :ref:`search`
-
