deprecated documentation

This bug tracker is for errors with the documentation, use the following as a template and remove or add fields as you see fit. Convert [ ] into [x] to check boxes:

- [x] This doc is inaccurate in this way: the list host example is deprecated in the newest version of the nova module (https://docs.openstack.org/newton/user-guide/sdk-compute-apis.html#list-hosts-api-v2)
- [ ] This is a doc addition request.
- [ ] I have a fix to the document that I can paste below including example: input and output.

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-----------------------------------
Release: 1.0.0 on 2019-08-23 19:37
SHA: f80f22b2537844fc48e4f78bfb9eb664ad1f1280
Source: http://git.openstack.org/cgit/openstack/openstack-manuals/tree/doc/user-guide/source/sdk-compute-apis.rst
URL: https://docs.openstack.org/newton/user-guide/sdk-compute-apis.html