Update ceph project name in README
Update ceph project name in README

New name is ceph-services

Change-Id: I10f8da8d0d96c1705b6173c5471ca3bd71dd6c60

open-power-ref-design-toolkit/opsmgr,open-power-ref-design/opsmgr,open-power-ref-design/opsmgr,open-power-ref-design/opsmgr,open-power-ref-design/opsmgr,open-power-ref-design-toolkit/opsmgr,open-power-ref-design-toolkit/opsmgr,open-power-ref-design/opsmgr,open-power-ref-design-toolkit/opsmgr,open-power-ref-design-toolkit/opsmgr