Add molecule test structure for each ceph role. Also
add missing doc/*tripleo-ceph-*.rst files.
Local test setup changes have been made in support of
these roles.
Change-Id: I43b828d5c892a0b33c7a3cbae4034267ce493dc0
Task: 34717
Task: 34718
Task: 34719
Task: 34720
Story: 2006041
Signed-off-by: Kevin Carter <kecarter@redhat.com>