mitaka-eol

This is the tag pointing to the tip of the stable/mitaka
branch before it was deleted.
OpenStack mitaka has reached end of life status:
https://releases.openstack.org/

liberty-eol

This is the tag pointing to the tip of the stable/liberty
branch before it was deleted.
OpenStack liberty has reached end of life status:
https://releases.openstack.org/

kilo-eol

This is the tag pointing to the tip of the stable/kilo
branch before it was deleted.
OpenStack kilo has reached end of life status:
https://releases.openstack.org/