Let mds create manila key and fs

Let mds create manila key and fs

ceph-ansible will take care of setting up client keys both
in ceph and on client side. It will also create filesystem
for manila. To assure that manila manifest can work in future
both with puppet and with ceph-ansible, creation of filesystem
is moved to ceph-mds manifest and creation of manila key on ceph
side is moved to ceph-base (so manila key is always created),
manila key is added to ceph-external for external ceph deployments.
Key creation is removed from manila.pp in patch
I2b5567a39ac8737e80758b705818cc1807dc8bf1

Change-Id: I6308a317ffe0af244396aba5197c85e273e69f68
Related-To: Ia3ef9e9a2b159dacea01e38762145ff2bcc7ba27
Depends-On: I3f18bbe476c4f43fa4e162cc66c5df443122cd0c