debian: python-flask is needed by ceph, not python-ceph

It's used by ceph-rest-api which is in the 'ceph' (server) package.

Backport: firefly
Signed-off-by: Sage Weil <sage@redhat.com>
ceph.spec: fix python-flask dependency

This is needed by ceph-rest-api, which is in ceph.rpm; it's not related to
python-ceph (except that ceph-rest-api happens to require that too).

Backport: firefly
Signed-off-by: Sage Weil <sage@redhat.com>
ceph.spec.in: move ceph_rest_api.py into ceph

Signed-off-by: Sage Weil <sage@redhat.com>
debian: move ceph_rest_api.py into ceph

Signed-off-by: Sage Weil <sage@redhat.com>
Merge pull request #2601 from ceph/wip-python-flask

debian: python-flask is needed by ceph, not python-ceph

Reviewed-by: Loic Dachary <loic@dachary.org>