Dev roadtomitaka



See merge request !30

# Conflicts:
#   Puppetfile
#   manifests/profile/zabbix/agent.pp
#   manifests/profile/zabbix/server.pp
#   manifests/role/monit_agent.pp
#   manifests/role/monit_server.pp
#   metadata.json

Multiple issues: 1. dnsmasq integration (to review); 2. use_neutron variable added in nova.conf (controller); 3. MTU variable (to review); 4. use apt::pin instead of file resource to select CEPH repo (Hammer)

Workaronds: 1. OVS bridges don't start after creation as well as after reboot (ovs 2.5.0); 2. MTU variable has been moved to be correctly set