This review introduces the CephDashboard service
to allow operators to deploy the new ceph dashboard
along with the other ceph components.
According to the spec we can add the environment
file to reference the template that contains all the
parameters needed to deploy the ceph-dashboard via
ceph-ansible related roles.
Implements: blueprint ceph-dashboard
Change-Id: I1d31cd99823686986cdbd3ac1df184e9457a361e
a407d4f5da