tls1.2: update ciphers to latest recommendations
tls1.2: update ciphers to latest recommendations

Based upon usual recommendations from:
https://hynek.me/articles/hardening-your-web-servers-ssl-ciphers/

Change-Id: Ia17660eb19cb2ad15f8d511cad2fce95f39b706b

stackforge/os-ansible-deployment,openstack/openstack-ansible,openstack/openstack-ansible,stackforge/os-ansible-deployment