Apply Juju SDK docstrings style

Docstring suggestions can be found in the official style guide [1]

[1]: https://juju.is/docs/sdk/styleguide#heading--docstrings

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README.md

StorPool Storage Backend for Cinder

Overview

This charm provides a StorPool storage backend for use with the Cinder charm.

To use:

juju deploy cinder

juju deploy cinder-storpool \
    --config storpool_template="my_template" \
    --config sp_api_http_host="1.2.3.4" \
    --config sp_auth_token=1234567890123456789

juju add-relation cinder-storpool cinder

Configuration

See config.yaml for details of configuration options.

Options with a blank 'default' field are mandatory and have to be provided by an administrator.