Since I8181ed696b9ab556e7741c08839d79167aff8350 were merged we need to add
support for the Cinder Volume here. By default this functionality is
disabled. To enable it change the option 'octavia_cinder_enabled' to True.
To override default settings use 'octavia_octavia_conf_overrides'.
Change-Id: Ib9015383d36fe47272e0a27408db89df83a4b38c
Signed-off-by: Maksim Malchuk <maksim.malchuk@gmail.com>