debian: add ci and update meta
debian: add ci and update meta

This patch adds the Debian jobs for this role to make sure
it's always passing as well as updates the meta to reflect
it's support of Debian accordingly.

Depends-On: I135ea73604890eae5e9e2a7cdcab81b2b39ad426
Change-Id: I64c1a0b7a356ae35f90270e17731a2b7b606a289

openstack/openstack-ansible-memcached_server,openstack/openstack-ansible-memcached_server