As announced on the mailing list [0], the Cinder project team wishes
to transition the stable/ocata branches of its deliverables from
'unmaintained' to EOL, and hereby requests that ocata-eol tags be
applied to the stable/ocata branches and the branches be deleted.
[0] http://lists.openstack.org/pipermail/openstack-discuss/2020-July/015838.html
Change-Id: I6d800b8d34e39901caa76fe36014834b62ffcfab