[cinder][kolla][OSA][release] Xena cycle-trailing release deadline

Hello teams with deliverables following the cycle-trailing release model! This is just a reminder to wrap up your trailing deliverables for Xena. A few cycles ago the deadline for cycle-trailing projects was extended to give more time. The deadline for Xena is *16 December, 2021* [1]. If things are ready sooner than that though, all the better for our downstream consumers. For reference, the following cycle-trailing deliverables will need final releases at some point until the above deadline: cinderlib kayobe kolla-ansible kolla openstack-ansible-roles openstack-ansible Thanks! Előd Illés irc: elodilles [1] https://releases.openstack.org/yoga/schedule.html#y-cycle-trail