kubernetes: move annotations to pod spec
kubernetes: move annotations to pod spec

Adapt to more recent Kubernetes versions. In addition to the pod
anti-affinity rule, also add tolerations to allow one ceph-mon to run on
master nodes as well.

JrCs/ceph-docker,osixia/ceph-docker,JrCs/ceph-docker,osixia/ceph-docker,ceph/ceph-docker,osixia/ceph-docker,JrCs/ceph-docker,ceph/ceph-docker